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Finding the Fourth Proportional to 266,878.62, 400,347.90 and 89,397.90

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Solution

The fourth proportional to 266,878.62, 400,347.90 and 89,397.90 is: 134,106.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,878.62 : 400,347.90 = 89,397.90 : x
  2. Step 2: Convert to fraction form
    266,878.62/400,347.90 = 89,397.90/x
  3. Step 3: Cross multiply
    266,878.62x = 400,347.90 × 89,397.90
  4. Step 4: Simplify right side
    266,878.62x = 35,790,261,529.41
  5. Step 5: Solve for x
    x = 35,790,261,529.41/266,878.62
  6. Step 6: Final answer
    x = 134,106.89

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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.