Home / 269,279.20-403,929.05-100,781.78

Finding the Fourth Proportional to 269,279.20, 403,929.05 and 100,781.78

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Solution

The fourth proportional to 269,279.20, 403,929.05 and 100,781.78 is: 151,176.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,279.20 : 403,929.05 = 100,781.78 : x
  2. Step 2: Convert to fraction form
    269,279.20/403,929.05 = 100,781.78/x
  3. Step 3: Cross multiply
    269,279.20x = 403,929.05 × 100,781.78
  4. Step 4: Simplify right side
    269,279.20x = 40,708,688,401.26
  5. Step 5: Solve for x
    x = 40,708,688,401.26/269,279.20
  6. Step 6: Final answer
    x = 151,176.51

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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.