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Finding the Fourth Proportional to 445,480.32, 667,329.60 and 267,890.40

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Solution

The fourth proportional to 445,480.32, 667,329.60 and 267,890.40 is: 401,299.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,480.32 : 667,329.60 = 267,890.40 : x
  2. Step 2: Convert to fraction form
    445,480.32/667,329.60 = 267,890.40/x
  3. Step 3: Cross multiply
    445,480.32x = 667,329.60 × 267,890.40
  4. Step 4: Simplify right side
    445,480.32x = 178,771,193,475.84
  5. Step 5: Solve for x
    x = 178,771,193,475.84/445,480.32
  6. Step 6: Final answer
    x = 401,299.87

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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.