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Finding the Fourth Proportional to 220,250.25, 303,919.56 and 129,586.29

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Solution

The fourth proportional to 220,250.25, 303,919.56 and 129,586.29 is: 178,813.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,250.25 : 303,919.56 = 129,586.29 : x
  2. Step 2: Convert to fraction form
    220,250.25/303,919.56 = 129,586.29/x
  3. Step 3: Cross multiply
    220,250.25x = 303,919.56 × 129,586.29
  4. Step 4: Simplify right side
    220,250.25x = 39,383,808,238.83
  5. Step 5: Solve for x
    x = 39,383,808,238.83/220,250.25
  6. Step 6: Final answer
    x = 178,813.91

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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.