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Finding the Fourth Proportional to 266,936.10, 400,404.15 and 261,687.30

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Solution

The fourth proportional to 266,936.10, 400,404.15 and 261,687.30 is: 392,530.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,936.10 : 400,404.15 = 261,687.30 : x
  2. Step 2: Convert to fraction form
    266,936.10/400,404.15 = 261,687.30/x
  3. Step 3: Cross multiply
    266,936.10x = 400,404.15 × 261,687.30
  4. Step 4: Simplify right side
    266,936.10x = 104,780,680,922.30
  5. Step 5: Solve for x
    x = 104,780,680,922.30/266,936.10
  6. Step 6: Final answer
    x = 392,530.95

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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.