Home / 279,427.28-419,141.06-92,438.78

Finding the Fourth Proportional to 279,427.28, 419,141.06 and 92,438.78

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Solution

The fourth proportional to 279,427.28, 419,141.06 and 92,438.78 is: 138,658.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,427.28 : 419,141.06 = 92,438.78 : x
  2. Step 2: Convert to fraction form
    279,427.28/419,141.06 = 92,438.78/x
  3. Step 3: Cross multiply
    279,427.28x = 419,141.06 × 92,438.78
  4. Step 4: Simplify right side
    279,427.28x = 38,744,888,234.31
  5. Step 5: Solve for x
    x = 38,744,888,234.31/279,427.28
  6. Step 6: Final answer
    x = 138,658.22

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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.