Home / 278,540.28-418,376.34-245,997.72

Finding the Fourth Proportional to 278,540.28, 418,376.34 and 245,997.72

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Solution

The fourth proportional to 278,540.28, 418,376.34 and 245,997.72 is: 369,496.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,540.28 : 418,376.34 = 245,997.72 : x
  2. Step 2: Convert to fraction form
    278,540.28/418,376.34 = 245,997.72/x
  3. Step 3: Cross multiply
    278,540.28x = 418,376.34 × 245,997.72
  4. Step 4: Simplify right side
    278,540.28x = 102,919,625,741.95
  5. Step 5: Solve for x
    x = 102,919,625,741.95/278,540.28
  6. Step 6: Final answer
    x = 369,496.38

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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.