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Finding the Fourth Proportional to 663,281.80, 994,922.70 and 220,049.80

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Solution

The fourth proportional to 663,281.80, 994,922.70 and 220,049.80 is: 330,074.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,281.80 : 994,922.70 = 220,049.80 : x
  2. Step 2: Convert to fraction form
    663,281.80/994,922.70 = 220,049.80/x
  3. Step 3: Cross multiply
    663,281.80x = 994,922.70 × 220,049.80
  4. Step 4: Simplify right side
    663,281.80x = 218,932,541,150.46
  5. Step 5: Solve for x
    x = 218,932,541,150.46/663,281.80
  6. Step 6: Final answer
    x = 330,074.70

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Double scale
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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.