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Finding the Fourth Proportional to 324,932.40, 486,815.40 and 278,276.40

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Solution

The fourth proportional to 324,932.40, 486,815.40 and 278,276.40 is: 416,915.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,932.40 : 486,815.40 = 278,276.40 : x
  2. Step 2: Convert to fraction form
    324,932.40/486,815.40 = 278,276.40/x
  3. Step 3: Cross multiply
    324,932.40x = 486,815.40 × 278,276.40
  4. Step 4: Simplify right side
    324,932.40x = 135,469,236,976.56
  5. Step 5: Solve for x
    x = 135,469,236,976.56/324,932.40
  6. Step 6: Final answer
    x = 416,915.14

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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.