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Finding the Fourth Proportional to 266,634.72, 400,119.12 and 142,057.44

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Solution

The fourth proportional to 266,634.72, 400,119.12 and 142,057.44 is: 213,175.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,634.72 : 400,119.12 = 142,057.44 : x
  2. Step 2: Convert to fraction form
    266,634.72/400,119.12 = 142,057.44/x
  3. Step 3: Cross multiply
    266,634.72x = 400,119.12 × 142,057.44
  4. Step 4: Simplify right side
    266,634.72x = 56,839,897,882.25
  5. Step 5: Solve for x
    x = 56,839,897,882.25/266,634.72
  6. Step 6: Final answer
    x = 213,175.16

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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.