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Finding the Fourth Proportional to 266,108, 399,178.56 and 88,630.88

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Solution

The fourth proportional to 266,108, 399,178.56 and 88,630.88 is: 132,951.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,108 : 399,178.56 = 88,630.88 : x
  2. Step 2: Convert to fraction form
    266,108/399,178.56 = 88,630.88/x
  3. Step 3: Cross multiply
    266,108x = 399,178.56 × 88,630.88
  4. Step 4: Simplify right side
    266,108x = 35,379,547,049.93
  5. Step 5: Solve for x
    x = 35,379,547,049.93/266,108
  6. Step 6: Final answer
    x = 132,951.84

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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.