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Finding the Fourth Proportional to 486,540.80, 729,881.04 and 149,609.78

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Solution

The fourth proportional to 486,540.80, 729,881.04 and 149,609.78 is: 224,436.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,540.80 : 729,881.04 = 149,609.78 : x
  2. Step 2: Convert to fraction form
    486,540.80/729,881.04 = 149,609.78/x
  3. Step 3: Cross multiply
    486,540.80x = 729,881.04 × 149,609.78
  4. Step 4: Simplify right side
    486,540.80x = 109,197,338,171.17
  5. Step 5: Solve for x
    x = 109,197,338,171.17/486,540.80
  6. Step 6: Final answer
    x = 224,436.14

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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.