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Finding the Fourth Proportional to 445,143.60, 667,715.40 and 267,559.20

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Solution

The fourth proportional to 445,143.60, 667,715.40 and 267,559.20 is: 401,338.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,143.60 : 667,715.40 = 267,559.20 : x
  2. Step 2: Convert to fraction form
    445,143.60/667,715.40 = 267,559.20/x
  3. Step 3: Cross multiply
    445,143.60x = 667,715.40 × 267,559.20
  4. Step 4: Simplify right side
    445,143.60x = 178,653,398,251.68
  5. Step 5: Solve for x
    x = 178,653,398,251.68/445,143.60
  6. Step 6: Final answer
    x = 401,338.80

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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.