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Finding the Fourth Proportional to 485,221.87, 669,610.73 and 267,438.29

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Solution

The fourth proportional to 485,221.87, 669,610.73 and 267,438.29 is: 369,067.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,221.87 : 669,610.73 = 267,438.29 : x
  2. Step 2: Convert to fraction form
    485,221.87/669,610.73 = 267,438.29/x
  3. Step 3: Cross multiply
    485,221.87x = 669,610.73 × 267,438.29
  4. Step 4: Simplify right side
    485,221.87x = 179,079,545,917.39
  5. Step 5: Solve for x
    x = 179,079,545,917.39/485,221.87
  6. Step 6: Final answer
    x = 369,067.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.