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Finding the Fourth Proportional to 266,047.38, 398,960.91 and 108,168.66

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Solution

The fourth proportional to 266,047.38, 398,960.91 and 108,168.66 is: 162,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,047.38 : 398,960.91 = 108,168.66 : x
  2. Step 2: Convert to fraction form
    266,047.38/398,960.91 = 108,168.66/x
  3. Step 3: Cross multiply
    266,047.38x = 398,960.91 × 108,168.66
  4. Step 4: Simplify right side
    266,047.38x = 43,155,067,027.08
  5. Step 5: Solve for x
    x = 43,155,067,027.08/266,047.38
  6. Step 6: Final answer
    x = 162,208.20

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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.