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Finding the Fourth Proportional to 327,875.73, 491,879.89 and 138,336.56

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Solution

The fourth proportional to 327,875.73, 491,879.89 and 138,336.56 is: 207,532.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,875.73 : 491,879.89 = 138,336.56 : x
  2. Step 2: Convert to fraction form
    327,875.73/491,879.89 = 138,336.56/x
  3. Step 3: Cross multiply
    327,875.73x = 491,879.89 × 138,336.56
  4. Step 4: Simplify right side
    327,875.73x = 68,044,971,224.10
  5. Step 5: Solve for x
    x = 68,044,971,224.10/327,875.73
  6. Step 6: Final answer
    x = 207,532.81

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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.