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Finding the Fourth Proportional to 491,540.40, 736,727.40 and 254,761.20

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Solution

The fourth proportional to 491,540.40, 736,727.40 and 254,761.20 is: 381,839.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,540.40 : 736,727.40 = 254,761.20 : x
  2. Step 2: Convert to fraction form
    491,540.40/736,727.40 = 254,761.20/x
  3. Step 3: Cross multiply
    491,540.40x = 736,727.40 × 254,761.20
  4. Step 4: Simplify right side
    491,540.40x = 187,689,556,496.88
  5. Step 5: Solve for x
    x = 187,689,556,496.88/491,540.40
  6. Step 6: Final answer
    x = 381,839.53

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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.