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Finding the Fourth Proportional to 239,122.52, 358,731.09 and 68,345.78

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Solution

The fourth proportional to 239,122.52, 358,731.09 and 68,345.78 is: 102,532.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,122.52 : 358,731.09 = 68,345.78 : x
  2. Step 2: Convert to fraction form
    239,122.52/358,731.09 = 68,345.78/x
  3. Step 3: Cross multiply
    239,122.52x = 358,731.09 × 68,345.78
  4. Step 4: Simplify right side
    239,122.52x = 24,517,756,156.30
  5. Step 5: Solve for x
    x = 24,517,756,156.30/239,122.52
  6. Step 6: Final answer
    x = 102,532.19

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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.