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Finding the Fourth Proportional to 267,712.20, 400,790.70 and 259,936.20

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Solution

The fourth proportional to 267,712.20, 400,790.70 and 259,936.20 is: 389,149.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,712.20 : 400,790.70 = 259,936.20 : x
  2. Step 2: Convert to fraction form
    267,712.20/400,790.70 = 259,936.20/x
  3. Step 3: Cross multiply
    267,712.20x = 400,790.70 × 259,936.20
  4. Step 4: Simplify right side
    267,712.20x = 104,180,011,553.34
  5. Step 5: Solve for x
    x = 104,180,011,553.34/267,712.20
  6. Step 6: Final answer
    x = 389,149.29

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1.5x scale

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.