Home / 269,278.62-403,928.18-100,781.20

Finding the Fourth Proportional to 269,278.62, 403,928.18 and 100,781.20

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Solution

The fourth proportional to 269,278.62, 403,928.18 and 100,781.20 is: 151,175.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,278.62 : 403,928.18 = 100,781.20 : x
  2. Step 2: Convert to fraction form
    269,278.62/403,928.18 = 100,781.20/x
  3. Step 3: Cross multiply
    269,278.62x = 403,928.18 × 100,781.20
  4. Step 4: Simplify right side
    269,278.62x = 40,708,367,704.04
  5. Step 5: Solve for x
    x = 40,708,367,704.04/269,278.62
  6. Step 6: Final answer
    x = 151,175.64

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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.