Finding the Fourth Proportional to 381,641.20, 572,461.80 and 97,331.20
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Solution
The fourth proportional to 381,641.20, 572,461.80 and 97,331.20 is: 145,996.80
Step by Step Solution
- Step 1: Write the proportion equation
381,641.20 : 572,461.80 = 97,331.20 : x - Step 2: Convert to fraction form
381,641.20/572,461.80 = 97,331.20/x - Step 3: Cross multiply
381,641.20x = 572,461.80 × 97,331.20 - Step 4: Simplify right side
381,641.20x = 55,718,393,948.16 - Step 5: Solve for x
x = 55,718,393,948.16/381,641.20 - Step 6: Final answer
x = 145,996.80
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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.