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Finding the Fourth Proportional to 423,565.52, 634,372.68 and 254,715.44

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Solution

The fourth proportional to 423,565.52, 634,372.68 and 254,715.44 is: 381,486.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,565.52 : 634,372.68 = 254,715.44 : x
  2. Step 2: Convert to fraction form
    423,565.52/634,372.68 = 254,715.44/x
  3. Step 3: Cross multiply
    423,565.52x = 634,372.68 × 254,715.44
  4. Step 4: Simplify right side
    423,565.52x = 161,584,516,310.18
  5. Step 5: Solve for x
    x = 161,584,516,310.18/423,565.52
  6. Step 6: Final answer
    x = 381,486.47

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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.