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Finding the Fourth Proportional to 220,997.53, 331,594.62 and 115,791.88

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Solution

The fourth proportional to 220,997.53, 331,594.62 and 115,791.88 is: 173,739.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,997.53 : 331,594.62 = 115,791.88 : x
  2. Step 2: Convert to fraction form
    220,997.53/331,594.62 = 115,791.88/x
  3. Step 3: Cross multiply
    220,997.53x = 331,594.62 × 115,791.88
  4. Step 4: Simplify right side
    220,997.53x = 38,395,964,447.69
  5. Step 5: Solve for x
    x = 38,395,964,447.69/220,997.53
  6. Step 6: Final answer
    x = 173,739.34

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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.