Home / 278,947.15-418,423.68-110,508.49

Finding the Fourth Proportional to 278,947.15, 418,423.68 and 110,508.49

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Solution

The fourth proportional to 278,947.15, 418,423.68 and 110,508.49 is: 165,763.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,947.15 : 418,423.68 = 110,508.49 : x
  2. Step 2: Convert to fraction form
    278,947.15/418,423.68 = 110,508.49/x
  3. Step 3: Cross multiply
    278,947.15x = 418,423.68 × 110,508.49
  4. Step 4: Simplify right side
    278,947.15x = 46,239,369,057.04
  5. Step 5: Solve for x
    x = 46,239,369,057.04/278,947.15
  6. Step 6: Final answer
    x = 165,763.91

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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.