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Finding the Fourth Proportional to 239,859.01, 331,018.41 and 132,428.71

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Solution

The fourth proportional to 239,859.01, 331,018.41 and 132,428.71 is: 182,758.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,859.01 : 331,018.41 = 132,428.71 : x
  2. Step 2: Convert to fraction form
    239,859.01/331,018.41 = 132,428.71/x
  3. Step 3: Cross multiply
    239,859.01x = 331,018.41 × 132,428.71
  4. Step 4: Simplify right side
    239,859.01x = 43,836,341,022.55
  5. Step 5: Solve for x
    x = 43,836,341,022.55/239,859.01
  6. Step 6: Final answer
    x = 182,758.78

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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.