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Finding the Fourth Proportional to 239,120.52, 358,728.09 and 68,343.78

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Solution

The fourth proportional to 239,120.52, 358,728.09 and 68,343.78 is: 102,529.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,120.52 : 358,728.09 = 68,343.78 : x
  2. Step 2: Convert to fraction form
    239,120.52/358,728.09 = 68,343.78/x
  3. Step 3: Cross multiply
    239,120.52x = 358,728.09 × 68,343.78
  4. Step 4: Simplify right side
    239,120.52x = 24,516,833,662.78
  5. Step 5: Solve for x
    x = 24,516,833,662.78/239,120.52
  6. Step 6: Final answer
    x = 102,529.19

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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.