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Finding the Fourth Proportional to 321,589.58, 443,820.87 and 178,395.75

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Solution

The fourth proportional to 321,589.58, 443,820.87 and 178,395.75 is: 246,201.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,589.58 : 443,820.87 = 178,395.75 : x
  2. Step 2: Convert to fraction form
    321,589.58/443,820.87 = 178,395.75/x
  3. Step 3: Cross multiply
    321,589.58x = 443,820.87 × 178,395.75
  4. Step 4: Simplify right side
    321,589.58x = 79,175,756,969.30
  5. Step 5: Solve for x
    x = 79,175,756,969.30/321,589.58
  6. Step 6: Final answer
    x = 246,201.26

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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.