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Finding the Fourth Proportional to 486,757.11, 730,136.22 and 126,927.64

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Solution

The fourth proportional to 486,757.11, 730,136.22 and 126,927.64 is: 190,391.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,757.11 : 730,136.22 = 126,927.64 : x
  2. Step 2: Convert to fraction form
    486,757.11/730,136.22 = 126,927.64/x
  3. Step 3: Cross multiply
    486,757.11x = 730,136.22 × 126,927.64
  4. Step 4: Simplify right side
    486,757.11x = 92,674,468,076.80
  5. Step 5: Solve for x
    x = 92,674,468,076.80/486,757.11
  6. Step 6: Final answer
    x = 190,391.61

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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.