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Finding the Fourth Proportional to 271,755.90, 407,474.28 and 82,159.20

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Solution

The fourth proportional to 271,755.90, 407,474.28 and 82,159.20 is: 123,190.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,755.90 : 407,474.28 = 82,159.20 : x
  2. Step 2: Convert to fraction form
    271,755.90/407,474.28 = 82,159.20/x
  3. Step 3: Cross multiply
    271,755.90x = 407,474.28 × 82,159.20
  4. Step 4: Simplify right side
    271,755.90x = 33,477,760,865.38
  5. Step 5: Solve for x
    x = 33,477,760,865.38/271,755.90
  6. Step 6: Final answer
    x = 123,190.56

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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.