Home / 664,764.96-997,121.28-221,532.96

Finding the Fourth Proportional to 664,764.96, 997,121.28 and 221,532.96

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Solution

The fourth proportional to 664,764.96, 997,121.28 and 221,532.96 is: 332,290.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,764.96 : 997,121.28 = 221,532.96 : x
  2. Step 2: Convert to fraction form
    664,764.96/997,121.28 = 221,532.96/x
  3. Step 3: Cross multiply
    664,764.96x = 997,121.28 × 221,532.96
  4. Step 4: Simplify right side
    664,764.96x = 220,895,228,637.39
  5. Step 5: Solve for x
    x = 220,895,228,637.39/664,764.96
  6. Step 6: Final answer
    x = 332,290.72

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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.