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Finding the Fourth Proportional to 399,143.67, 598,811.19 and 132,906.60

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Solution

The fourth proportional to 399,143.67, 598,811.19 and 132,906.60 is: 199,391.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,143.67 : 598,811.19 = 132,906.60 : x
  2. Step 2: Convert to fraction form
    399,143.67/598,811.19 = 132,906.60/x
  3. Step 3: Cross multiply
    399,143.67x = 598,811.19 × 132,906.60
  4. Step 4: Simplify right side
    399,143.67x = 79,585,959,304.85
  5. Step 5: Solve for x
    x = 79,585,959,304.85/399,143.67
  6. Step 6: Final answer
    x = 199,391.76

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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.