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Finding the Fourth Proportional to 324,939.96, 487,359.54 and 125,353.80

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Solution

The fourth proportional to 324,939.96, 487,359.54 and 125,353.80 is: 188,011.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,939.96 : 487,359.54 = 125,353.80 : x
  2. Step 2: Convert to fraction form
    324,939.96/487,359.54 = 125,353.80/x
  3. Step 3: Cross multiply
    324,939.96x = 487,359.54 × 125,353.80
  4. Step 4: Simplify right side
    324,939.96x = 61,092,370,305.25
  5. Step 5: Solve for x
    x = 61,092,370,305.25/324,939.96
  6. Step 6: Final answer
    x = 188,011.26

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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.