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Finding the Fourth Proportional to 327,550.88, 491,329.56 and 138,043.28

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Solution

The fourth proportional to 327,550.88, 491,329.56 and 138,043.28 is: 207,066.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,550.88 : 491,329.56 = 138,043.28 : x
  2. Step 2: Convert to fraction form
    327,550.88/491,329.56 = 138,043.28/x
  3. Step 3: Cross multiply
    327,550.88x = 491,329.56 × 138,043.28
  4. Step 4: Simplify right side
    327,550.88x = 67,824,744,023.36
  5. Step 5: Solve for x
    x = 67,824,744,023.36/327,550.88
  6. Step 6: Final answer
    x = 207,066.29

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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.