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Finding the Fourth Proportional to 321,659.38, 481,880.03 and 214,720.85

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Solution

The fourth proportional to 321,659.38, 481,880.03 and 214,720.85 is: 321,674.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,659.38 : 481,880.03 = 214,720.85 : x
  2. Step 2: Convert to fraction form
    321,659.38/481,880.03 = 214,720.85/x
  3. Step 3: Cross multiply
    321,659.38x = 481,880.03 × 214,720.85
  4. Step 4: Simplify right side
    321,659.38x = 103,469,689,770.72
  5. Step 5: Solve for x
    x = 103,469,689,770.72/321,659.38
  6. Step 6: Final answer
    x = 321,674.71

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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.