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Finding the Fourth Proportional to 221,279.06, 331,919.79 and 55,067.06

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Solution

The fourth proportional to 221,279.06, 331,919.79 and 55,067.06 is: 82,600.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,279.06 : 331,919.79 = 55,067.06 : x
  2. Step 2: Convert to fraction form
    221,279.06/331,919.79 = 55,067.06/x
  3. Step 3: Cross multiply
    221,279.06x = 331,919.79 × 55,067.06
  4. Step 4: Simplify right side
    221,279.06x = 18,277,846,991.12
  5. Step 5: Solve for x
    x = 18,277,846,991.12/221,279.06
  6. Step 6: Final answer
    x = 82,600.89

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1.5x scale

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.