Home / 245,221.68-338,436.15-137,789.38

Finding the Fourth Proportional to 245,221.68, 338,436.15 and 137,789.38

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Solution

The fourth proportional to 245,221.68, 338,436.15 and 137,789.38 is: 190,166.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,221.68 : 338,436.15 = 137,789.38 : x
  2. Step 2: Convert to fraction form
    245,221.68/338,436.15 = 137,789.38/x
  3. Step 3: Cross multiply
    245,221.68x = 338,436.15 × 137,789.38
  4. Step 4: Simplify right side
    245,221.68x = 46,632,907,278.09
  5. Step 5: Solve for x
    x = 46,632,907,278.09/245,221.68
  6. Step 6: Final answer
    x = 190,166.33

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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.