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Finding the Fourth Proportional to 321,081.87, 443,390.83 and 240,369.26

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Solution

The fourth proportional to 321,081.87, 443,390.83 and 240,369.26 is: 331,932.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,081.87 : 443,390.83 = 240,369.26 : x
  2. Step 2: Convert to fraction form
    321,081.87/443,390.83 = 240,369.26/x
  3. Step 3: Cross multiply
    321,081.87x = 443,390.83 × 240,369.26
  4. Step 4: Simplify right side
    321,081.87x = 106,577,522,880.01
  5. Step 5: Solve for x
    x = 106,577,522,880.01/321,081.87
  6. Step 6: Final answer
    x = 331,932.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.