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Finding the Fourth Proportional to 478,514.70, 717,426.45 and 268,217.10

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Solution

The fourth proportional to 478,514.70, 717,426.45 and 268,217.10 is: 402,131.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,514.70 : 717,426.45 = 268,217.10 : x
  2. Step 2: Convert to fraction form
    478,514.70/717,426.45 = 268,217.10/x
  3. Step 3: Cross multiply
    478,514.70x = 717,426.45 × 268,217.10
  4. Step 4: Simplify right side
    478,514.70x = 192,426,041,882.30
  5. Step 5: Solve for x
    x = 192,426,041,882.30/478,514.70
  6. Step 6: Final answer
    x = 402,131.93

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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.