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Finding the Fourth Proportional to 491,388.71, 737,087.18 and 136,430.39

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Solution

The fourth proportional to 491,388.71, 737,087.18 and 136,430.39 is: 204,646.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,388.71 : 737,087.18 = 136,430.39 : x
  2. Step 2: Convert to fraction form
    491,388.71/737,087.18 = 136,430.39/x
  3. Step 3: Cross multiply
    491,388.71x = 737,087.18 × 136,430.39
  4. Step 4: Simplify right side
    491,388.71x = 100,561,092,591.97
  5. Step 5: Solve for x
    x = 100,561,092,591.97/491,388.71
  6. Step 6: Final answer
    x = 204,646.73

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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.