Home / 279,936.44-419,977.05-80,271.44

Finding the Fourth Proportional to 279,936.44, 419,977.05 and 80,271.44

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Solution

The fourth proportional to 279,936.44, 419,977.05 and 80,271.44 is: 120,427.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936.44 : 419,977.05 = 80,271.44 : x
  2. Step 2: Convert to fraction form
    279,936.44/419,977.05 = 80,271.44/x
  3. Step 3: Cross multiply
    279,936.44x = 419,977.05 × 80,271.44
  4. Step 4: Simplify right side
    279,936.44x = 33,712,160,069.21
  5. Step 5: Solve for x
    x = 33,712,160,069.21/279,936.44
  6. Step 6: Final answer
    x = 120,427.91

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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.