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Finding the Fourth Proportional to 492,434.72, 738,389.28 and 255,538.88

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Solution

The fourth proportional to 492,434.72, 738,389.28 and 255,538.88 is: 383,171.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,434.72 : 738,389.28 = 255,538.88 : x
  2. Step 2: Convert to fraction form
    492,434.72/738,389.28 = 255,538.88/x
  3. Step 3: Cross multiply
    492,434.72x = 738,389.28 × 255,538.88
  4. Step 4: Simplify right side
    492,434.72x = 188,687,169,615.21
  5. Step 5: Solve for x
    x = 188,687,169,615.21/492,434.72
  6. Step 6: Final answer
    x = 383,171.95

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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.