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Finding the Fourth Proportional to 266,780.62, 400,141.45 and 67,101.08

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Solution

The fourth proportional to 266,780.62, 400,141.45 and 67,101.08 is: 100,644.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,780.62 : 400,141.45 = 67,101.08 : x
  2. Step 2: Convert to fraction form
    266,780.62/400,141.45 = 67,101.08/x
  3. Step 3: Cross multiply
    266,780.62x = 400,141.45 × 67,101.08
  4. Step 4: Simplify right side
    266,780.62x = 26,849,924,907.13
  5. Step 5: Solve for x
    x = 26,849,924,907.13/266,780.62
  6. Step 6: Final answer
    x = 100,644.21

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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.