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Finding the Fourth Proportional to 247,991.52, 372,011.76 and 79,469.40

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Solution

The fourth proportional to 247,991.52, 372,011.76 and 79,469.40 is: 119,211.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,991.52 : 372,011.76 = 79,469.40 : x
  2. Step 2: Convert to fraction form
    247,991.52/372,011.76 = 79,469.40/x
  3. Step 3: Cross multiply
    247,991.52x = 372,011.76 × 79,469.40
  4. Step 4: Simplify right side
    247,991.52x = 29,563,551,360.14
  5. Step 5: Solve for x
    x = 29,563,551,360.14/247,991.52
  6. Step 6: Final answer
    x = 119,211.94

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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.