Home / 245,128.28-338,240.18-137,677.73

Finding the Fourth Proportional to 245,128.28, 338,240.18 and 137,677.73

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Solution

The fourth proportional to 245,128.28, 338,240.18 and 137,677.73 is: 189,974.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,128.28 : 338,240.18 = 137,677.73 : x
  2. Step 2: Convert to fraction form
    245,128.28/338,240.18 = 137,677.73/x
  3. Step 3: Cross multiply
    245,128.28x = 338,240.18 × 137,677.73
  4. Step 4: Simplify right side
    245,128.28x = 46,568,137,797.60
  5. Step 5: Solve for x
    x = 46,568,137,797.60/245,128.28
  6. Step 6: Final answer
    x = 189,974.57

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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.