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Finding the Fourth Proportional to 324,898.90, 487,380.92 and 111,638.73

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Solution

The fourth proportional to 324,898.90, 487,380.92 and 111,638.73 is: 167,469.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,898.90 : 487,380.92 = 111,638.73 : x
  2. Step 2: Convert to fraction form
    324,898.90/487,380.92 = 111,638.73/x
  3. Step 3: Cross multiply
    324,898.90x = 487,380.92 × 111,638.73
  4. Step 4: Simplify right side
    324,898.90x = 54,410,586,935.03
  5. Step 5: Solve for x
    x = 54,410,586,935.03/324,898.90
  6. Step 6: Final answer
    x = 167,469.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.