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Finding the Fourth Proportional to 239,892.78, 330,613.47 and 159,177.90

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Solution

The fourth proportional to 239,892.78, 330,613.47 and 159,177.90 is: 219,374.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,892.78 : 330,613.47 = 159,177.90 : x
  2. Step 2: Convert to fraction form
    239,892.78/330,613.47 = 159,177.90/x
  3. Step 3: Cross multiply
    239,892.78x = 330,613.47 × 159,177.90
  4. Step 4: Simplify right side
    239,892.78x = 52,626,357,866.31
  5. Step 5: Solve for x
    x = 52,626,357,866.31/239,892.78
  6. Step 6: Final answer
    x = 219,374.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.