Home / 279,936.18-419,976.67-80,271.18

Finding the Fourth Proportional to 279,936.18, 419,976.67 and 80,271.18

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Solution

The fourth proportional to 279,936.18, 419,976.67 and 80,271.18 is: 120,427.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936.18 : 419,976.67 = 80,271.18 : x
  2. Step 2: Convert to fraction form
    279,936.18/419,976.67 = 80,271.18/x
  3. Step 3: Cross multiply
    279,936.18x = 419,976.67 × 80,271.18
  4. Step 4: Simplify right side
    279,936.18x = 33,712,023,722.63
  5. Step 5: Solve for x
    x = 33,712,023,722.63/279,936.18
  6. Step 6: Final answer
    x = 120,427.53

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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.