Home / 278,311.07-417,206.85-109,832.78

Finding the Fourth Proportional to 278,311.07, 417,206.85 and 109,832.78

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Solution

The fourth proportional to 278,311.07, 417,206.85 and 109,832.78 is: 164,646.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,311.07 : 417,206.85 = 109,832.78 : x
  2. Step 2: Convert to fraction form
    278,311.07/417,206.85 = 109,832.78/x
  3. Step 3: Cross multiply
    278,311.07x = 417,206.85 × 109,832.78
  4. Step 4: Simplify right side
    278,311.07x = 45,822,988,170.54
  5. Step 5: Solve for x
    x = 45,822,988,170.54/278,311.07
  6. Step 6: Final answer
    x = 164,646.66

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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.