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Finding the Fourth Proportional to 239,597.68, 359,439.54 and 81,789.22

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Solution

The fourth proportional to 239,597.68, 359,439.54 and 81,789.22 is: 122,698.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,597.68 : 359,439.54 = 81,789.22 : x
  2. Step 2: Convert to fraction form
    239,597.68/359,439.54 = 81,789.22/x
  3. Step 3: Cross multiply
    239,597.68x = 359,439.54 × 81,789.22
  4. Step 4: Simplify right side
    239,597.68x = 29,398,279,613.76
  5. Step 5: Solve for x
    x = 29,398,279,613.76/239,597.68
  6. Step 6: Final answer
    x = 122,698.52

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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.