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Finding the Fourth Proportional to 266,009.24, 399,078.90 and 88,515.80

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Solution

The fourth proportional to 266,009.24, 399,078.90 and 88,515.80 is: 132,795.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,009.24 : 399,078.90 = 88,515.80 : x
  2. Step 2: Convert to fraction form
    266,009.24/399,078.90 = 88,515.80/x
  3. Step 3: Cross multiply
    266,009.24x = 399,078.90 × 88,515.80
  4. Step 4: Simplify right side
    266,009.24x = 35,324,788,096.62
  5. Step 5: Solve for x
    x = 35,324,788,096.62/266,009.24
  6. Step 6: Final answer
    x = 132,795.34

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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.