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Finding the Fourth Proportional to 321,172.56, 443,265.30 and 185,179.91

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Solution

The fourth proportional to 321,172.56, 443,265.30 and 185,179.91 is: 255,575.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,172.56 : 443,265.30 = 185,179.91 : x
  2. Step 2: Convert to fraction form
    321,172.56/443,265.30 = 185,179.91/x
  3. Step 3: Cross multiply
    321,172.56x = 443,265.30 × 185,179.91
  4. Step 4: Simplify right side
    321,172.56x = 82,083,826,143.80
  5. Step 5: Solve for x
    x = 82,083,826,143.80/321,172.56
  6. Step 6: Final answer
    x = 255,575.46

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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.