Home / 245,631.30-338,974.30-138,201.54

Finding the Fourth Proportional to 245,631.30, 338,974.30 and 138,201.54

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Solution

The fourth proportional to 245,631.30, 338,974.30 and 138,201.54 is: 190,719.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,631.30 : 338,974.30 = 138,201.54 : x
  2. Step 2: Convert to fraction form
    245,631.30/338,974.30 = 138,201.54/x
  3. Step 3: Cross multiply
    245,631.30x = 338,974.30 × 138,201.54
  4. Step 4: Simplify right side
    245,631.30x = 46,846,770,280.42
  5. Step 5: Solve for x
    x = 46,846,770,280.42/245,631.30
  6. Step 6: Final answer
    x = 190,719.87

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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.