Finding the Fourth Proportional to 431,828.16, 647,761.68 and 132,286.96
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Solution
The fourth proportional to 431,828.16, 647,761.68 and 132,286.96 is: 198,436.40
Step by Step Solution
- Step 1: Write the proportion equation
431,828.16 : 647,761.68 = 132,286.96 : x - Step 2: Convert to fraction form
431,828.16/647,761.68 = 132,286.96/x - Step 3: Cross multiply
431,828.16x = 647,761.68 × 132,286.96 - Step 4: Simplify right side
431,828.16x = 85,690,423,451.69 - Step 5: Solve for x
x = 85,690,423,451.69/431,828.16 - Step 6: Final answer
x = 198,436.40
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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.