Finding the Fourth Proportional to 287,430.63, 396,654.99 and 172,711.19
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Solution
The fourth proportional to 287,430.63, 396,654.99 and 172,711.19 is: 238,341.87
Step by Step Solution
- Step 1: Write the proportion equation
287,430.63 : 396,654.99 = 172,711.19 : x - Step 2: Convert to fraction form
287,430.63/396,654.99 = 172,711.19/x - Step 3: Cross multiply
287,430.63x = 396,654.99 × 172,711.19 - Step 4: Simplify right side
287,430.63x = 68,506,754,922.92 - Step 5: Solve for x
x = 68,506,754,922.92/287,430.63 - Step 6: Final answer
x = 238,341.87
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.