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Finding the Fourth Proportional to 267,218.80, 400,943.40 and 135,890.80

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Solution

The fourth proportional to 267,218.80, 400,943.40 and 135,890.80 is: 203,894.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,218.80 : 400,943.40 = 135,890.80 : x
  2. Step 2: Convert to fraction form
    267,218.80/400,943.40 = 135,890.80/x
  3. Step 3: Cross multiply
    267,218.80x = 400,943.40 × 135,890.80
  4. Step 4: Simplify right side
    267,218.80x = 54,484,519,380.72
  5. Step 5: Solve for x
    x = 54,484,519,380.72/267,218.80
  6. Step 6: Final answer
    x = 203,894.78

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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.