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Finding the Fourth Proportional to 266,099.80, 399,213.48 and 88,608.40

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Solution

The fourth proportional to 266,099.80, 399,213.48 and 88,608.40 is: 132,933.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,099.80 : 399,213.48 = 88,608.40 : x
  2. Step 2: Convert to fraction form
    266,099.80/399,213.48 = 88,608.40/x
  3. Step 3: Cross multiply
    266,099.80x = 399,213.48 × 88,608.40
  4. Step 4: Simplify right side
    266,099.80x = 35,373,667,721.23
  5. Step 5: Solve for x
    x = 35,373,667,721.23/266,099.80
  6. Step 6: Final answer
    x = 132,933.84

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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.