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Finding the Fourth Proportional to 664,181.80, 996,272.70 and 220,949.80

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Solution

The fourth proportional to 664,181.80, 996,272.70 and 220,949.80 is: 331,424.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,181.80 : 996,272.70 = 220,949.80 : x
  2. Step 2: Convert to fraction form
    664,181.80/996,272.70 = 220,949.80/x
  3. Step 3: Cross multiply
    664,181.80x = 996,272.70 × 220,949.80
  4. Step 4: Simplify right side
    664,181.80x = 220,126,253,810.46
  5. Step 5: Solve for x
    x = 220,126,253,810.46/664,181.80
  6. Step 6: Final answer
    x = 331,424.70

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Half scale
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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.