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Finding the Fourth Proportional to 239,425.17, 358,917.18 and 81,543.81

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Solution

The fourth proportional to 239,425.17, 358,917.18 and 81,543.81 is: 122,240.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,425.17 : 358,917.18 = 81,543.81 : x
  2. Step 2: Convert to fraction form
    239,425.17/358,917.18 = 81,543.81/x
  3. Step 3: Cross multiply
    239,425.17x = 358,917.18 × 81,543.81
  4. Step 4: Simplify right side
    239,425.17x = 29,267,475,371.81
  5. Step 5: Solve for x
    x = 29,267,475,371.81/239,425.17
  6. Step 6: Final answer
    x = 122,240.60

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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.