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Finding the Fourth Proportional to 321,687.87, 482,469.51 and 108,433.35

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Solution

The fourth proportional to 321,687.87, 482,469.51 and 108,433.35 is: 162,629.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,687.87 : 482,469.51 = 108,433.35 : x
  2. Step 2: Convert to fraction form
    321,687.87/482,469.51 = 108,433.35/x
  3. Step 3: Cross multiply
    321,687.87x = 482,469.51 × 108,433.35
  4. Step 4: Simplify right side
    321,687.87x = 52,315,785,242.16
  5. Step 5: Solve for x
    x = 52,315,785,242.16/321,687.87
  6. Step 6: Final answer
    x = 162,629.03

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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.