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Finding the Fourth Proportional to 267,738.82, 401,611.11 and 80,751.94

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Solution

The fourth proportional to 267,738.82, 401,611.11 and 80,751.94 is: 121,128.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,738.82 : 401,611.11 = 80,751.94 : x
  2. Step 2: Convert to fraction form
    267,738.82/401,611.11 = 80,751.94/x
  3. Step 3: Cross multiply
    267,738.82x = 401,611.11 × 80,751.94
  4. Step 4: Simplify right side
    267,738.82x = 32,430,876,258.05
  5. Step 5: Solve for x
    x = 32,430,876,258.05/267,738.82
  6. Step 6: Final answer
    x = 121,128.78

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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.