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Finding the Fourth Proportional to 416,930.68, 625,389.87 and 132,638.45

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Solution

The fourth proportional to 416,930.68, 625,389.87 and 132,638.45 is: 198,955.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,930.68 : 625,389.87 = 132,638.45 : x
  2. Step 2: Convert to fraction form
    416,930.68/625,389.87 = 132,638.45/x
  3. Step 3: Cross multiply
    416,930.68x = 625,389.87 × 132,638.45
  4. Step 4: Simplify right side
    416,930.68x = 82,950,743,002.50
  5. Step 5: Solve for x
    x = 82,950,743,002.50/416,930.68
  6. Step 6: Final answer
    x = 198,955.72

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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.