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Finding the Fourth Proportional to 321,270.59, 443,356.04 and 178,033.03

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Solution

The fourth proportional to 321,270.59, 443,356.04 and 178,033.03 is: 245,687.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,270.59 : 443,356.04 = 178,033.03 : x
  2. Step 2: Convert to fraction form
    321,270.59/443,356.04 = 178,033.03/x
  3. Step 3: Cross multiply
    321,270.59x = 443,356.04 × 178,033.03
  4. Step 4: Simplify right side
    321,270.59x = 78,932,019,170.00
  5. Step 5: Solve for x
    x = 78,932,019,170.00/321,270.59
  6. Step 6: Final answer
    x = 245,687.04

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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.