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Finding the Fourth Proportional to 492,731.10, 739,096.65 and 279,279.90

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Solution

The fourth proportional to 492,731.10, 739,096.65 and 279,279.90 is: 418,919.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,731.10 : 739,096.65 = 279,279.90 : x
  2. Step 2: Convert to fraction form
    492,731.10/739,096.65 = 279,279.90/x
  3. Step 3: Cross multiply
    492,731.10x = 739,096.65 × 279,279.90
  4. Step 4: Simplify right side
    492,731.10x = 206,414,838,502.34
  5. Step 5: Solve for x
    x = 206,414,838,502.34/492,731.10
  6. Step 6: Final answer
    x = 418,919.85

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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.