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Finding the Fourth Proportional to 664,132.50, 996,198.75 and 220,900.50

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Solution

The fourth proportional to 664,132.50, 996,198.75 and 220,900.50 is: 331,350.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,132.50 : 996,198.75 = 220,900.50 : x
  2. Step 2: Convert to fraction form
    664,132.50/996,198.75 = 220,900.50/x
  3. Step 3: Cross multiply
    664,132.50x = 996,198.75 × 220,900.50
  4. Step 4: Simplify right side
    664,132.50x = 220,060,801,974.38
  5. Step 5: Solve for x
    x = 220,060,801,974.38/664,132.50
  6. Step 6: Final answer
    x = 331,350.75

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Half scale
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Double scale
Find fourth proportional to 664,133.50, 996,200.25 and 220,901.50
Similar ratio
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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.