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Finding the Fourth Proportional to 268,876.20, 403,217.10 and 135,712.20

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Solution

The fourth proportional to 268,876.20, 403,217.10 and 135,712.20 is: 203,519.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,876.20 : 403,217.10 = 135,712.20 : x
  2. Step 2: Convert to fraction form
    268,876.20/403,217.10 = 135,712.20/x
  3. Step 3: Cross multiply
    268,876.20x = 403,217.10 × 135,712.20
  4. Step 4: Simplify right side
    268,876.20x = 54,721,479,718.62
  5. Step 5: Solve for x
    x = 54,721,479,718.62/268,876.20
  6. Step 6: Final answer
    x = 203,519.24

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1.5x scale

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.