Home / 261,498.20-391,902.64-103,640.52

Finding the Fourth Proportional to 261,498.20, 391,902.64 and 103,640.52

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Solution

The fourth proportional to 261,498.20, 391,902.64 and 103,640.52 is: 155,324.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,498.20 : 391,902.64 = 103,640.52 : x
  2. Step 2: Convert to fraction form
    261,498.20/391,902.64 = 103,640.52/x
  3. Step 3: Cross multiply
    261,498.20x = 391,902.64 × 103,640.52
  4. Step 4: Simplify right side
    261,498.20x = 40,616,993,398.97
  5. Step 5: Solve for x
    x = 40,616,993,398.97/261,498.20
  6. Step 6: Final answer
    x = 155,324.18

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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.