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Finding the Fourth Proportional to 321,370.44, 443,517.36 and 178,172.88

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Solution

The fourth proportional to 321,370.44, 443,517.36 and 178,172.88 is: 245,893.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,370.44 : 443,517.36 = 178,172.88 : x
  2. Step 2: Convert to fraction form
    321,370.44/443,517.36 = 178,172.88/x
  3. Step 3: Cross multiply
    321,370.44x = 443,517.36 × 178,172.88
  4. Step 4: Simplify right side
    321,370.44x = 79,022,765,361.20
  5. Step 5: Solve for x
    x = 79,022,765,361.20/321,370.44
  6. Step 6: Final answer
    x = 245,893.07

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1.5x scale

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.