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Finding the Fourth Proportional to 220,249.88, 303,919.04 and 129,585.90

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Solution

The fourth proportional to 220,249.88, 303,919.04 and 129,585.90 is: 178,813.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,249.88 : 303,919.04 = 129,585.90 : x
  2. Step 2: Convert to fraction form
    220,249.88/303,919.04 = 129,585.90/x
  3. Step 3: Cross multiply
    220,249.88x = 303,919.04 × 129,585.90
  4. Step 4: Simplify right side
    220,249.88x = 39,383,622,325.54
  5. Step 5: Solve for x
    x = 39,383,622,325.54/220,249.88
  6. Step 6: Final answer
    x = 178,813.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.