Denshi Jisho — Online Japanese dictionary

割合 わりあい 1: rate; ratio; percentage; proportion;
2: comparatively;
3: contrary to expectations
Common word, Adverb, Noun 
割合 わりあいに comparatively
Common word, Adverb 

You can also

Look up kanji details for 割合.

Try a Yahoo Jisho search for 割合 .
Try a Goo Jisho search for 割合 .
Try a Google search for 割合 .