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Finding the Fourth Proportional to 445,651.40, 667,447.32 and 267,766.28

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Solution

The fourth proportional to 445,651.40, 667,447.32 and 267,766.28 is: 401,030.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,651.40 : 667,447.32 = 267,766.28 : x
  2. Step 2: Convert to fraction form
    445,651.40/667,447.32 = 267,766.28/x
  3. Step 3: Cross multiply
    445,651.40x = 667,447.32 × 267,766.28
  4. Step 4: Simplify right side
    445,651.40x = 178,719,885,972.37
  5. Step 5: Solve for x
    x = 178,719,885,972.37/445,651.40
  6. Step 6: Final answer
    x = 401,030.68

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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.