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Finding the Fourth Proportional to 324,757.62, 487,011.78 and 111,485.79

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Solution

The fourth proportional to 324,757.62, 487,011.78 and 111,485.79 is: 167,185.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,757.62 : 487,011.78 = 111,485.79 : x
  2. Step 2: Convert to fraction form
    324,757.62/487,011.78 = 111,485.79/x
  3. Step 3: Cross multiply
    324,757.62x = 487,011.78 × 111,485.79
  4. Step 4: Simplify right side
    324,757.62x = 54,294,893,032.61
  5. Step 5: Solve for x
    x = 54,294,893,032.61/324,757.62
  6. Step 6: Final answer
    x = 167,185.89

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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.