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Finding the Fourth Proportional to 220,843.58, 331,267.09 and 120,949.27

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Solution

The fourth proportional to 220,843.58, 331,267.09 and 120,949.27 is: 181,424.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,843.58 : 331,267.09 = 120,949.27 : x
  2. Step 2: Convert to fraction form
    220,843.58/331,267.09 = 120,949.27/x
  3. Step 3: Cross multiply
    220,843.58x = 331,267.09 × 120,949.27
  4. Step 4: Simplify right side
    220,843.58x = 40,066,511,579.98
  5. Step 5: Solve for x
    x = 40,066,511,579.98/220,843.58
  6. Step 6: Final answer
    x = 181,424.85

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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.