Home / 213,731.20-320,625.60-73,532.80

Finding the Fourth Proportional to 213,731.20, 320,625.60 and 73,532.80

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Solution

The fourth proportional to 213,731.20, 320,625.60 and 73,532.80 is: 110,309.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,731.20 : 320,625.60 = 73,532.80 : x
  2. Step 2: Convert to fraction form
    213,731.20/320,625.60 = 73,532.80/x
  3. Step 3: Cross multiply
    213,731.20x = 320,625.60 × 73,532.80
  4. Step 4: Simplify right side
    213,731.20x = 23,576,498,119.68
  5. Step 5: Solve for x
    x = 23,576,498,119.68/213,731.20
  6. Step 6: Final answer
    x = 110,309.11

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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.