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Finding the Fourth Proportional to 239,124.57, 329,963.25 and 137,144.76

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Solution

The fourth proportional to 239,124.57, 329,963.25 and 137,144.76 is: 189,243.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,124.57 : 329,963.25 = 137,144.76 : x
  2. Step 2: Convert to fraction form
    239,124.57/329,963.25 = 137,144.76/x
  3. Step 3: Cross multiply
    239,124.57x = 329,963.25 × 137,144.76
  4. Step 4: Simplify right side
    239,124.57x = 45,252,730,730.07
  5. Step 5: Solve for x
    x = 45,252,730,730.07/239,124.57
  6. Step 6: Final answer
    x = 189,243.33

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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.