Home / 279,923.80-419,759.34-80,198.47

Finding the Fourth Proportional to 279,923.80, 419,759.34 and 80,198.47

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Solution

The fourth proportional to 279,923.80, 419,759.34 and 80,198.47 is: 120,261.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,923.80 : 419,759.34 = 80,198.47 : x
  2. Step 2: Convert to fraction form
    279,923.80/419,759.34 = 80,198.47/x
  3. Step 3: Cross multiply
    279,923.80x = 419,759.34 × 80,198.47
  4. Step 4: Simplify right side
    279,923.80x = 33,664,056,836.21
  5. Step 5: Solve for x
    x = 33,664,056,836.21/279,923.80
  6. Step 6: Final answer
    x = 120,261.50

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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.