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Finding the Fourth Proportional to 327,750.71, 491,385.49 and 138,203.42

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Solution

The fourth proportional to 327,750.71, 491,385.49 and 138,203.42 is: 207,203.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,750.71 : 491,385.49 = 138,203.42 : x
  2. Step 2: Convert to fraction form
    327,750.71/491,385.49 = 138,203.42/x
  3. Step 3: Cross multiply
    327,750.71x = 491,385.49 × 138,203.42
  4. Step 4: Simplify right side
    327,750.71x = 67,911,152,453.94
  5. Step 5: Solve for x
    x = 67,911,152,453.94/327,750.71
  6. Step 6: Final answer
    x = 207,203.68

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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.