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Finding the Fourth Proportional to 266,435.60, 399,616.92 and 88,938.56

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Solution

The fourth proportional to 266,435.60, 399,616.92 and 88,938.56 is: 133,395.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,435.60 : 399,616.92 = 88,938.56 : x
  2. Step 2: Convert to fraction form
    266,435.60/399,616.92 = 88,938.56/x
  3. Step 3: Cross multiply
    266,435.60x = 399,616.92 × 88,938.56
  4. Step 4: Simplify right side
    266,435.60x = 35,541,353,416.44
  5. Step 5: Solve for x
    x = 35,541,353,416.44/266,435.60
  6. Step 6: Final answer
    x = 133,395.66

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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.