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Finding the Fourth Proportional to 324,016.91, 486,107.38 and 99,388.77

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Solution

The fourth proportional to 324,016.91, 486,107.38 and 99,388.77 is: 149,108.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,016.91 : 486,107.38 = 99,388.77 : x
  2. Step 2: Convert to fraction form
    324,016.91/486,107.38 = 99,388.77/x
  3. Step 3: Cross multiply
    324,016.91x = 486,107.38 × 99,388.77
  4. Step 4: Simplify right side
    324,016.91x = 48,313,615,062.75
  5. Step 5: Solve for x
    x = 48,313,615,062.75/324,016.91
  6. Step 6: Final answer
    x = 149,108.31

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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.