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Finding the Fourth Proportional to 222,067.80, 333,028.80 and 81,808.20

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Solution

The fourth proportional to 222,067.80, 333,028.80 and 81,808.20 is: 122,685.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,067.80 : 333,028.80 = 81,808.20 : x
  2. Step 2: Convert to fraction form
    222,067.80/333,028.80 = 81,808.20/x
  3. Step 3: Cross multiply
    222,067.80x = 333,028.80 × 81,808.20
  4. Step 4: Simplify right side
    222,067.80x = 27,244,486,676.16
  5. Step 5: Solve for x
    x = 27,244,486,676.16/222,067.80
  6. Step 6: Final answer
    x = 122,685.44

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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.