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Finding the Fourth Proportional to 664,320.80, 996,481.20 and 243,760.70

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Solution

The fourth proportional to 664,320.80, 996,481.20 and 243,760.70 is: 365,641.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,320.80 : 996,481.20 = 243,760.70 : x
  2. Step 2: Convert to fraction form
    664,320.80/996,481.20 = 243,760.70/x
  3. Step 3: Cross multiply
    664,320.80x = 996,481.20 × 243,760.70
  4. Step 4: Simplify right side
    664,320.80x = 242,902,954,848.84
  5. Step 5: Solve for x
    x = 242,902,954,848.84/664,320.80
  6. Step 6: Final answer
    x = 365,641.05

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Similar ratio
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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.