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Finding the Fourth Proportional to 486,182.42, 729,267.76 and 126,321.42

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Solution

The fourth proportional to 486,182.42, 729,267.76 and 126,321.42 is: 189,480.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,182.42 : 729,267.76 = 126,321.42 : x
  2. Step 2: Convert to fraction form
    486,182.42/729,267.76 = 126,321.42/x
  3. Step 3: Cross multiply
    486,182.42x = 729,267.76 × 126,321.42
  4. Step 4: Simplify right side
    486,182.42x = 92,122,138,687.62
  5. Step 5: Solve for x
    x = 92,122,138,687.62/486,182.42
  6. Step 6: Final answer
    x = 189,480.61

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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.