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Finding the Fourth Proportional to 266,115.12, 399,236.58 and 88,623.72

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Solution

The fourth proportional to 266,115.12, 399,236.58 and 88,623.72 is: 132,956.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,115.12 : 399,236.58 = 88,623.72 : x
  2. Step 2: Convert to fraction form
    266,115.12/399,236.58 = 88,623.72/x
  3. Step 3: Cross multiply
    266,115.12x = 399,236.58 × 88,623.72
  4. Step 4: Simplify right side
    266,115.12x = 35,381,830,879.68
  5. Step 5: Solve for x
    x = 35,381,830,879.68/266,115.12
  6. Step 6: Final answer
    x = 132,956.86

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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.