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Finding the Fourth Proportional to 412,661.80, 618,906.30 and 202,450.60

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Solution

The fourth proportional to 412,661.80, 618,906.30 and 202,450.60 is: 303,633.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,661.80 : 618,906.30 = 202,450.60 : x
  2. Step 2: Convert to fraction form
    412,661.80/618,906.30 = 202,450.60/x
  3. Step 3: Cross multiply
    412,661.80x = 618,906.30 × 202,450.60
  4. Step 4: Simplify right side
    412,661.80x = 125,297,951,778.78
  5. Step 5: Solve for x
    x = 125,297,951,778.78/412,661.80
  6. Step 6: Final answer
    x = 303,633.51

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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.