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Finding the Fourth Proportional to 358,660.78, 538,115.72 and 159,121.29

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Solution

The fourth proportional to 358,660.78, 538,115.72 and 159,121.29 is: 238,737.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,660.78 : 538,115.72 = 159,121.29 : x
  2. Step 2: Convert to fraction form
    358,660.78/538,115.72 = 159,121.29/x
  3. Step 3: Cross multiply
    358,660.78x = 538,115.72 × 159,121.29
  4. Step 4: Simplify right side
    358,660.78x = 85,625,667,535.68
  5. Step 5: Solve for x
    x = 85,625,667,535.68/358,660.78
  6. Step 6: Final answer
    x = 238,737.19

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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.