1. in a way that corresponds in size, amount, or degree to something else; in proper or balanced relation

Examples

• The company's profits grew proportionally with its sales.
• Larger cities have proportionally more public transportation options.
• The recipe ingredients should be mixed proportionally to maintain the correct flavor.
• Tax contributions increase proportionally with income.
• The number of teachers hired was proportionally matched to student enrollment.
• Smaller organisms have proportionally larger surface areas relative to their volume.