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Finding the Fourth Proportional to 445,139.60, 667,709.40 and 267,555.20

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Solution

The fourth proportional to 445,139.60, 667,709.40 and 267,555.20 is: 401,332.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,139.60 : 667,709.40 = 267,555.20 : x
  2. Step 2: Convert to fraction form
    445,139.60/667,709.40 = 267,555.20/x
  3. Step 3: Cross multiply
    445,139.60x = 667,709.40 × 267,555.20
  4. Step 4: Simplify right side
    445,139.60x = 178,649,122,058.88
  5. Step 5: Solve for x
    x = 178,649,122,058.88/445,139.60
  6. Step 6: Final answer
    x = 401,332.80

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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.