Home / 278,858.20-417,825.60-160,322.80

Finding the Fourth Proportional to 278,858.20, 417,825.60 and 160,322.80

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Solution

The fourth proportional to 278,858.20, 417,825.60 and 160,322.80 is: 240,218.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,858.20 : 417,825.60 = 160,322.80 : x
  2. Step 2: Convert to fraction form
    278,858.20/417,825.60 = 160,322.80/x
  3. Step 3: Cross multiply
    278,858.20x = 417,825.60 × 160,322.80
  4. Step 4: Simplify right side
    278,858.20x = 66,986,970,103.68
  5. Step 5: Solve for x
    x = 66,986,970,103.68/278,858.20
  6. Step 6: Final answer
    x = 240,218.76

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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.