Finding the Fourth Proportional to 372,430.80, 558,646.20 and 135,781.20
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Solution
The fourth proportional to 372,430.80, 558,646.20 and 135,781.20 is: 203,671.80
Step by Step Solution
- Step 1: Write the proportion equation
372,430.80 : 558,646.20 = 135,781.20 : x - Step 2: Convert to fraction form
372,430.80/558,646.20 = 135,781.20/x - Step 3: Cross multiply
372,430.80x = 558,646.20 × 135,781.20 - Step 4: Simplify right side
372,430.80x = 75,853,651,411.44 - Step 5: Solve for x
x = 75,853,651,411.44/372,430.80 - Step 6: Final answer
x = 203,671.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.