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Finding the Fourth Proportional to 321,959.20, 483,003.60 and 111,553.60

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Solution

The fourth proportional to 321,959.20, 483,003.60 and 111,553.60 is: 167,352.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,959.20 : 483,003.60 = 111,553.60 : x
  2. Step 2: Convert to fraction form
    321,959.20/483,003.60 = 111,553.60/x
  3. Step 3: Cross multiply
    321,959.20x = 483,003.60 × 111,553.60
  4. Step 4: Simplify right side
    321,959.20x = 53,880,790,392.96
  5. Step 5: Solve for x
    x = 53,880,790,392.96/321,959.20
  6. Step 6: Final answer
    x = 167,352.85

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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.