Home / 278,651.10-417,844.89-107,952.78

Finding the Fourth Proportional to 278,651.10, 417,844.89 and 107,952.78

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Solution

The fourth proportional to 278,651.10, 417,844.89 and 107,952.78 is: 161,878.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,651.10 : 417,844.89 = 107,952.78 : x
  2. Step 2: Convert to fraction form
    278,651.10/417,844.89 = 107,952.78/x
  3. Step 3: Cross multiply
    278,651.10x = 417,844.89 × 107,952.78
  4. Step 4: Simplify right side
    278,651.10x = 45,107,517,484.29
  5. Step 5: Solve for x
    x = 45,107,517,484.29/278,651.10
  6. Step 6: Final answer
    x = 161,878.12

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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.