Home / 278,378.20-417,566.13-100,843.66

Finding the Fourth Proportional to 278,378.20, 417,566.13 and 100,843.66

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Solution

The fourth proportional to 278,378.20, 417,566.13 and 100,843.66 is: 151,265.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,378.20 : 417,566.13 = 100,843.66 : x
  2. Step 2: Convert to fraction form
    278,378.20/417,566.13 = 100,843.66/x
  3. Step 3: Cross multiply
    278,378.20x = 417,566.13 × 100,843.66
  4. Step 4: Simplify right side
    278,378.20x = 42,108,896,841.24
  5. Step 5: Solve for x
    x = 42,108,896,841.24/278,378.20
  6. Step 6: Final answer
    x = 151,265.07

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1.5x scale

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.