Home / 321,091.20-443,121.84-185,147.28

Finding the Fourth Proportional to 321,091.20, 443,121.84 and 185,147.28

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Solution

The fourth proportional to 321,091.20, 443,121.84 and 185,147.28 is: 255,512.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,091.20 : 443,121.84 = 185,147.28 : x
  2. Step 2: Convert to fraction form
    321,091.20/443,121.84 = 185,147.28/x
  3. Step 3: Cross multiply
    321,091.20x = 443,121.84 × 185,147.28
  4. Step 4: Simplify right side
    321,091.20x = 82,042,803,384.60
  5. Step 5: Solve for x
    x = 82,042,803,384.60/321,091.20
  6. Step 6: Final answer
    x = 255,512.46

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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.