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Finding the Fourth Proportional to 266,972.84, 400,472.56 and 79,966.52

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Solution

The fourth proportional to 266,972.84, 400,472.56 and 79,966.52 is: 119,953.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,972.84 : 400,472.56 = 79,966.52 : x
  2. Step 2: Convert to fraction form
    266,972.84/400,472.56 = 79,966.52/x
  3. Step 3: Cross multiply
    266,972.84x = 400,472.56 × 79,966.52
  4. Step 4: Simplify right side
    266,972.84x = 32,024,396,978.69
  5. Step 5: Solve for x
    x = 32,024,396,978.69/266,972.84
  6. Step 6: Final answer
    x = 119,953.76

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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.