Here's what rhymes with proportionare.
                        
                        
                    
                                mare  mer  mehr  mair  their  there  where  care  aware  bear  fair  hair  share  chair  pair  rare  wear  affair  bare  dare  fare  tear  unfair  faire  hare  ware  pear  snare  guerre  lair  affaire  cher  fere  pare  sehr  thair  funfair  square  prayer  compare  spare  swear  unaware  glare  stare  flare  impair  scare  stair  earthenware  flair  blare  midair  billionaire  overbear  ironware  legionnaire  ovenware  anywhere  repair  beware  forbear  millionaire  underwear  thoroughfare  doctrinaire  silverware  aftercare  bugbear  debonair  ensnare  horsehair  solitaire  forswear  parterre  repairer  foursquare  outerwear  spyware  tinware  coheir  millionnaire  broodmare  debonaire  everywhere  prepare  declare  despair  questionnaire  curare  concessionaire  medicare  chinaware  commissionaire  dinnerware  kitchenware  eldercare  beachwear  foreswear  backstair  wirehair  disrepair  tableware  maidenhair  camelhair  setsquare  extraordinaire  multimillionaire  Words that almost rhyme with proportionare
nel  knell  nell  well  cell  tell  fell  del  sell  bell  hell  shell  smell  gel  tel  dell  delle  yell  belle  celle  unwell  weal  bel  sel  telle  organelle  jell  morel  noel  personnel  hotel  compel  dwell  spell  swell  gaol  motel  nouvelle  quell  gazelle  impel  lapel  quel  nacelle  novelle  oversell  parallel  farewell  citadel  clientele  excel  repel  befell  cartel  foretell  propel  pastel  decibel  fontanelle  photocell  resell  retell  undersell  outsell  dispel  expel  infidel  carousel  bagatelle  caravel  commonweal  antipersonnel  misspell  carrousel  tagliatelle  zinfandel  mademoiselle  materiel  nonparallel  muscatel  therefor