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Finding the Fourth Proportional to 321,347.57, 443,451.96 and 178,104.54

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Solution

The fourth proportional to 321,347.57, 443,451.96 and 178,104.54 is: 245,780.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,347.57 : 443,451.96 = 178,104.54 : x
  2. Step 2: Convert to fraction form
    321,347.57/443,451.96 = 178,104.54/x
  3. Step 3: Cross multiply
    321,347.57x = 443,451.96 × 178,104.54
  4. Step 4: Simplify right side
    321,347.57x = 78,980,807,347.90
  5. Step 5: Solve for x
    x = 78,980,807,347.90/321,347.57
  6. Step 6: Final answer
    x = 245,780.01

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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.