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Finding the Fourth Proportional to 257,486.20, 386,134.32 and 88,963.27

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Solution

The fourth proportional to 257,486.20, 386,134.32 and 88,963.27 is: 133,412.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,486.20 : 386,134.32 = 88,963.27 : x
  2. Step 2: Convert to fraction form
    257,486.20/386,134.32 = 88,963.27/x
  3. Step 3: Cross multiply
    257,486.20x = 386,134.32 × 88,963.27
  4. Step 4: Simplify right side
    257,486.20x = 34,351,771,766.43
  5. Step 5: Solve for x
    x = 34,351,771,766.43/257,486.20
  6. Step 6: Final answer
    x = 133,412.09

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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.