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Finding the Fourth Proportional to 221,041.57, 331,326.28 and 126,067.28

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Solution

The fourth proportional to 221,041.57, 331,326.28 and 126,067.28 is: 188,966.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,041.57 : 331,326.28 = 126,067.28 : x
  2. Step 2: Convert to fraction form
    221,041.57/331,326.28 = 126,067.28/x
  3. Step 3: Cross multiply
    221,041.57x = 331,326.28 × 126,067.28
  4. Step 4: Simplify right side
    221,041.57x = 41,769,402,912.12
  5. Step 5: Solve for x
    x = 41,769,402,912.12/221,041.57
  6. Step 6: Final answer
    x = 188,966.28

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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.