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Finding the Fourth Proportional to 239,659.57, 330,759.50 and 137,684.84

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Solution

The fourth proportional to 239,659.57, 330,759.50 and 137,684.84 is: 190,021.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,659.57 : 330,759.50 = 137,684.84 : x
  2. Step 2: Convert to fraction form
    239,659.57/330,759.50 = 137,684.84/x
  3. Step 3: Cross multiply
    239,659.57x = 330,759.50 × 137,684.84
  4. Step 4: Simplify right side
    239,659.57x = 45,540,568,835.98
  5. Step 5: Solve for x
    x = 45,540,568,835.98/239,659.57
  6. Step 6: Final answer
    x = 190,021.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.