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Finding the Fourth Proportional to 245,502.92, 338,679.60 and 159,455.78

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Solution

The fourth proportional to 245,502.92, 338,679.60 and 159,455.78 is: 219,974.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,502.92 : 338,679.60 = 159,455.78 : x
  2. Step 2: Convert to fraction form
    245,502.92/338,679.60 = 159,455.78/x
  3. Step 3: Cross multiply
    245,502.92x = 338,679.60 × 159,455.78
  4. Step 4: Simplify right side
    245,502.92x = 54,004,419,788.09
  5. Step 5: Solve for x
    x = 54,004,419,788.09/245,502.92
  6. Step 6: Final answer
    x = 219,974.65

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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.