Home / 279,425.28-419,138.06-92,436.78

Finding the Fourth Proportional to 279,425.28, 419,138.06 and 92,436.78

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Solution

The fourth proportional to 279,425.28, 419,138.06 and 92,436.78 is: 138,655.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,425.28 : 419,138.06 = 92,436.78 : x
  2. Step 2: Convert to fraction form
    279,425.28/419,138.06 = 92,436.78/x
  3. Step 3: Cross multiply
    279,425.28x = 419,138.06 × 92,436.78
  4. Step 4: Simplify right side
    279,425.28x = 38,743,772,179.66
  5. Step 5: Solve for x
    x = 38,743,772,179.66/279,425.28
  6. Step 6: Final answer
    x = 138,655.21

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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.