Home / 279,947.80-419,795.30-80,222.52

Finding the Fourth Proportional to 279,947.80, 419,795.30 and 80,222.52

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Solution

The fourth proportional to 279,947.80, 419,795.30 and 80,222.52 is: 120,297.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,947.80 : 419,795.30 = 80,222.52 : x
  2. Step 2: Convert to fraction form
    279,947.80/419,795.30 = 80,222.52/x
  3. Step 3: Cross multiply
    279,947.80x = 419,795.30 × 80,222.52
  4. Step 4: Simplify right side
    279,947.80x = 33,677,036,850.16
  5. Step 5: Solve for x
    x = 33,677,036,850.16/279,947.80
  6. Step 6: Final answer
    x = 120,297.56

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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.