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Finding the Fourth Proportional to 399,167.98, 598,847.64 and 132,930.80

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Solution

The fourth proportional to 399,167.98, 598,847.64 and 132,930.80 is: 199,428.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,167.98 : 598,847.64 = 132,930.80 : x
  2. Step 2: Convert to fraction form
    399,167.98/598,847.64 = 132,930.80/x
  3. Step 3: Cross multiply
    399,167.98x = 598,847.64 × 132,930.80
  4. Step 4: Simplify right side
    399,167.98x = 79,605,295,863.31
  5. Step 5: Solve for x
    x = 79,605,295,863.31/399,167.98
  6. Step 6: Final answer
    x = 199,428.06

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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.