Home / 278,131.20-416,540.70-188,901.60

Finding the Fourth Proportional to 278,131.20, 416,540.70 and 188,901.60

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Solution

The fourth proportional to 278,131.20, 416,540.70 and 188,901.60 is: 282,906.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,131.20 : 416,540.70 = 188,901.60 : x
  2. Step 2: Convert to fraction form
    278,131.20/416,540.70 = 188,901.60/x
  3. Step 3: Cross multiply
    278,131.20x = 416,540.70 × 188,901.60
  4. Step 4: Simplify right side
    278,131.20x = 78,685,204,695.12
  5. Step 5: Solve for x
    x = 78,685,204,695.12/278,131.20
  6. Step 6: Final answer
    x = 282,906.79

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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.