Finding the Fourth Proportional to 387,453.92, 534,686.00 and 215,366.58
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Solution
The fourth proportional to 387,453.92, 534,686.00 and 215,366.58 is: 297,205.65
Step by Step Solution
- Step 1: Write the proportion equation
387,453.92 : 534,686.00 = 215,366.58 : x - Step 2: Convert to fraction form
387,453.92/534,686.00 = 215,366.58/x - Step 3: Cross multiply
387,453.92x = 534,686.00 × 215,366.58 - Step 4: Simplify right side
387,453.92x = 115,153,494,117.05 - Step 5: Solve for x
x = 115,153,494,117.05/387,453.92 - Step 6: Final answer
x = 297,205.65
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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.