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Finding the Fourth Proportional to 266,077.99, 398,770.44 and 108,121.78

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Solution

The fourth proportional to 266,077.99, 398,770.44 and 108,121.78 is: 162,041.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,077.99 : 398,770.44 = 108,121.78 : x
  2. Step 2: Convert to fraction form
    266,077.99/398,770.44 = 108,121.78/x
  3. Step 3: Cross multiply
    266,077.99x = 398,770.44 × 108,121.78
  4. Step 4: Simplify right side
    266,077.99x = 43,115,770,485.37
  5. Step 5: Solve for x
    x = 43,115,770,485.37/266,077.99
  6. Step 6: Final answer
    x = 162,041.85

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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.