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Finding the Fourth Proportional to 239,760.96, 330,880.92 and 137,819.52

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Solution

The fourth proportional to 239,760.96, 330,880.92 and 137,819.52 is: 190,197.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,760.96 : 330,880.92 = 137,819.52 : x
  2. Step 2: Convert to fraction form
    239,760.96/330,880.92 = 137,819.52/x
  3. Step 3: Cross multiply
    239,760.96x = 330,880.92 × 137,819.52
  4. Step 4: Simplify right side
    239,760.96x = 45,601,849,571.56
  5. Step 5: Solve for x
    x = 45,601,849,571.56/239,760.96
  6. Step 6: Final answer
    x = 190,197.14

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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.