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Finding the Fourth Proportional to 239,163.38, 358,761.47 and 79,239

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Solution

The fourth proportional to 239,163.38, 358,761.47 and 79,239 is: 118,863.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,163.38 : 358,761.47 = 79,239 : x
  2. Step 2: Convert to fraction form
    239,163.38/358,761.47 = 79,239/x
  3. Step 3: Cross multiply
    239,163.38x = 358,761.47 × 79,239
  4. Step 4: Simplify right side
    239,163.38x = 28,427,899,725.14
  5. Step 5: Solve for x
    x = 28,427,899,725.14/239,163.38
  6. Step 6: Final answer
    x = 118,863.93

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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.