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Finding the Fourth Proportional to 266,229.72, 398,999.88 and 108,274.68

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Solution

The fourth proportional to 266,229.72, 398,999.88 and 108,274.68 is: 162,271.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,229.72 : 398,999.88 = 108,274.68 : x
  2. Step 2: Convert to fraction form
    266,229.72/398,999.88 = 108,274.68/x
  3. Step 3: Cross multiply
    266,229.72x = 398,999.88 × 108,274.68
  4. Step 4: Simplify right side
    266,229.72x = 43,201,584,327.04
  5. Step 5: Solve for x
    x = 43,201,584,327.04/266,229.72
  6. Step 6: Final answer
    x = 162,271.83

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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.