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Finding the Fourth Proportional to 664,102.80, 996,154.20 and 220,870.80

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Solution

The fourth proportional to 664,102.80, 996,154.20 and 220,870.80 is: 331,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,102.80 : 996,154.20 = 220,870.80 : x
  2. Step 2: Convert to fraction form
    664,102.80/996,154.20 = 220,870.80/x
  3. Step 3: Cross multiply
    664,102.80x = 996,154.20 × 220,870.80
  4. Step 4: Simplify right side
    664,102.80x = 220,021,375,077.36
  5. Step 5: Solve for x
    x = 220,021,375,077.36/664,102.80
  6. Step 6: Final answer
    x = 331,306.20

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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.