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Finding the Fourth Proportional to 266,008.32, 399,079.31 and 76,469.03

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Solution

The fourth proportional to 266,008.32, 399,079.31 and 76,469.03 is: 114,722.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,008.32 : 399,079.31 = 76,469.03 : x
  2. Step 2: Convert to fraction form
    266,008.32/399,079.31 = 76,469.03/x
  3. Step 3: Cross multiply
    266,008.32x = 399,079.31 × 76,469.03
  4. Step 4: Simplify right side
    266,008.32x = 30,517,206,628.30
  5. Step 5: Solve for x
    x = 30,517,206,628.30/266,008.32
  6. Step 6: Final answer
    x = 114,722.75

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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.