Home / 664,376.20-996,564.30-221,144.20

Finding the Fourth Proportional to 664,376.20, 996,564.30 and 221,144.20

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Solution

The fourth proportional to 664,376.20, 996,564.30 and 221,144.20 is: 331,716.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,376.20 : 996,564.30 = 221,144.20 : x
  2. Step 2: Convert to fraction form
    664,376.20/996,564.30 = 221,144.20/x
  3. Step 3: Cross multiply
    664,376.20x = 996,564.30 × 221,144.20
  4. Step 4: Simplify right side
    664,376.20x = 220,384,414,872.06
  5. Step 5: Solve for x
    x = 220,384,414,872.06/664,376.20
  6. Step 6: Final answer
    x = 331,716.30

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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.