Finding the Fourth Proportional to 431,658.72, 647,547.21 and 147,272.99
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Solution
The fourth proportional to 431,658.72, 647,547.21 and 147,272.99 is: 220,929.65
Step by Step Solution
- Step 1: Write the proportion equation
431,658.72 : 647,547.21 = 147,272.99 : x - Step 2: Convert to fraction form
431,658.72/647,547.21 = 147,272.99/x - Step 3: Cross multiply
431,658.72x = 647,547.21 × 147,272.99 - Step 4: Simplify right side
431,658.72x = 95,366,210,545.12 - Step 5: Solve for x
x = 95,366,210,545.12/431,658.72 - Step 6: Final answer
x = 220,929.65
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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.