Home / 245,131.28-338,244.32-137,680.73

Finding the Fourth Proportional to 245,131.28, 338,244.32 and 137,680.73

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Solution

The fourth proportional to 245,131.28, 338,244.32 and 137,680.73 is: 189,978.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,131.28 : 338,244.32 = 137,680.73 : x
  2. Step 2: Convert to fraction form
    245,131.28/338,244.32 = 137,680.73/x
  3. Step 3: Cross multiply
    245,131.28x = 338,244.32 × 137,680.73
  4. Step 4: Simplify right side
    245,131.28x = 46,569,722,516.33
  5. Step 5: Solve for x
    x = 46,569,722,516.33/245,131.28
  6. Step 6: Final answer
    x = 189,978.71

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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.