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Finding the Fourth Proportional to 321,675.36, 443,965.15 and 178,481.53

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Solution

The fourth proportional to 321,675.36, 443,965.15 and 178,481.53 is: 246,334.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,675.36 : 443,965.15 = 178,481.53 : x
  2. Step 2: Convert to fraction form
    321,675.36/443,965.15 = 178,481.53/x
  3. Step 3: Cross multiply
    321,675.36x = 443,965.15 × 178,481.53
  4. Step 4: Simplify right side
    321,675.36x = 79,239,579,238.68
  5. Step 5: Solve for x
    x = 79,239,579,238.68/321,675.36
  6. Step 6: Final answer
    x = 246,334.00

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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.