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Finding the Fourth Proportional to 492,434.56, 738,389.28 and 255,538.72

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Solution

The fourth proportional to 492,434.56, 738,389.28 and 255,538.72 is: 383,171.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,434.56 : 738,389.28 = 255,538.72 : x
  2. Step 2: Convert to fraction form
    492,434.56/738,389.28 = 255,538.72/x
  3. Step 3: Cross multiply
    492,434.56x = 738,389.28 × 255,538.72
  4. Step 4: Simplify right side
    492,434.56x = 188,687,051,472.92
  5. Step 5: Solve for x
    x = 188,687,051,472.92/492,434.56
  6. Step 6: Final answer
    x = 383,171.83

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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.