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Finding the Fourth Proportional to 324,120.40, 486,180.60 and 137,107.60

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Solution

The fourth proportional to 324,120.40, 486,180.60 and 137,107.60 is: 205,661.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,120.40 : 486,180.60 = 137,107.60 : x
  2. Step 2: Convert to fraction form
    324,120.40/486,180.60 = 137,107.60/x
  3. Step 3: Cross multiply
    324,120.40x = 486,180.60 × 137,107.60
  4. Step 4: Simplify right side
    324,120.40x = 66,659,055,232.56
  5. Step 5: Solve for x
    x = 66,659,055,232.56/324,120.40
  6. Step 6: Final answer
    x = 205,661.40

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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.