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Finding the Fourth Proportional to 266,059.26, 399,079.14 and 79,065.90

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Solution

The fourth proportional to 266,059.26, 399,079.14 and 79,065.90 is: 118,595.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,059.26 : 399,079.14 = 79,065.90 : x
  2. Step 2: Convert to fraction form
    266,059.26/399,079.14 = 79,065.90/x
  3. Step 3: Cross multiply
    266,059.26x = 399,079.14 × 79,065.90
  4. Step 4: Simplify right side
    266,059.26x = 31,553,551,375.33
  5. Step 5: Solve for x
    x = 31,553,551,375.33/266,059.26
  6. Step 6: Final answer
    x = 118,595.95

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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.