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Finding the Fourth Proportional to 321,568.98, 443,766.21 and 178,342.26

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Solution

The fourth proportional to 321,568.98, 443,766.21 and 178,342.26 is: 246,112.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,568.98 : 443,766.21 = 178,342.26 : x
  2. Step 2: Convert to fraction form
    321,568.98/443,766.21 = 178,342.26/x
  3. Step 3: Cross multiply
    321,568.98x = 443,766.21 × 178,342.26
  4. Step 4: Simplify right side
    321,568.98x = 79,142,268,803.03
  5. Step 5: Solve for x
    x = 79,142,268,803.03/321,568.98
  6. Step 6: Final answer
    x = 246,112.88

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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.