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Finding the Fourth Proportional to 220,975.60, 331,511.40 and 80,734

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Solution

The fourth proportional to 220,975.60, 331,511.40 and 80,734 is: 121,118.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,975.60 : 331,511.40 = 80,734 : x
  2. Step 2: Convert to fraction form
    220,975.60/331,511.40 = 80,734/x
  3. Step 3: Cross multiply
    220,975.60x = 331,511.40 × 80,734
  4. Step 4: Simplify right side
    220,975.60x = 26,764,241,367.60
  5. Step 5: Solve for x
    x = 26,764,241,367.60/220,975.60
  6. Step 6: Final answer
    x = 121,118.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.