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Finding the Fourth Proportional to 207,221.80, 310,679.10 and 88,796.20

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Solution

The fourth proportional to 207,221.80, 310,679.10 and 88,796.20 is: 133,128.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,221.80 : 310,679.10 = 88,796.20 : x
  2. Step 2: Convert to fraction form
    207,221.80/310,679.10 = 88,796.20/x
  3. Step 3: Cross multiply
    207,221.80x = 310,679.10 × 88,796.20
  4. Step 4: Simplify right side
    207,221.80x = 27,587,123,499.42
  5. Step 5: Solve for x
    x = 27,587,123,499.42/207,221.80
  6. Step 6: Final answer
    x = 133,128.48

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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.