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Finding the Fourth Proportional to 220,265.25, 303,940.26 and 129,601.29

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Solution

The fourth proportional to 220,265.25, 303,940.26 and 129,601.29 is: 178,834.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,265.25 : 303,940.26 = 129,601.29 : x
  2. Step 2: Convert to fraction form
    220,265.25/303,940.26 = 129,601.29/x
  3. Step 3: Cross multiply
    220,265.25x = 303,940.26 × 129,601.29
  4. Step 4: Simplify right side
    220,265.25x = 39,391,049,778.94
  5. Step 5: Solve for x
    x = 39,391,049,778.94/220,265.25
  6. Step 6: Final answer
    x = 178,834.61

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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.