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Finding the Fourth Proportional to 220,250.76, 303,920.24 and 129,586.76

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Solution

The fourth proportional to 220,250.76, 303,920.24 and 129,586.76 is: 178,814.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,250.76 : 303,920.24 = 129,586.76 : x
  2. Step 2: Convert to fraction form
    220,250.76/303,920.24 = 129,586.76/x
  3. Step 3: Cross multiply
    220,250.76x = 303,920.24 × 129,586.76
  4. Step 4: Simplify right side
    220,250.76x = 39,384,039,200.02
  5. Step 5: Solve for x
    x = 39,384,039,200.02/220,250.76
  6. Step 6: Final answer
    x = 178,814.54

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Half scale
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Double scale
Find fourth proportional to 220,251.76, 303,921.62 and 129,587.76
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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.