Home / 245,890.28-339,360.92-138,481.32

Finding the Fourth Proportional to 245,890.28, 339,360.92 and 138,481.32

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Solution

The fourth proportional to 245,890.28, 339,360.92 and 138,481.32 is: 191,122.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,890.28 : 339,360.92 = 138,481.32 : x
  2. Step 2: Convert to fraction form
    245,890.28/339,360.92 = 138,481.32/x
  3. Step 3: Cross multiply
    245,890.28x = 339,360.92 × 138,481.32
  4. Step 4: Simplify right side
    245,890.28x = 46,995,148,158.01
  5. Step 5: Solve for x
    x = 46,995,148,158.01/245,890.28
  6. Step 6: Final answer
    x = 191,122.43

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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.