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Finding the Fourth Proportional to 508,722.10, 763,083.15 and 309,433.30

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Solution

The fourth proportional to 508,722.10, 763,083.15 and 309,433.30 is: 464,149.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,722.10 : 763,083.15 = 309,433.30 : x
  2. Step 2: Convert to fraction form
    508,722.10/763,083.15 = 309,433.30/x
  3. Step 3: Cross multiply
    508,722.10x = 763,083.15 × 309,433.30
  4. Step 4: Simplify right side
    508,722.10x = 236,123,337,278.90
  5. Step 5: Solve for x
    x = 236,123,337,278.90/508,722.10
  6. Step 6: Final answer
    x = 464,149.95

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Similar ratio
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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.