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Finding the Fourth Proportional to 221,431.94, 332,200.64 and 71,672.25

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Solution

The fourth proportional to 221,431.94, 332,200.64 and 71,672.25 is: 107,525.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,431.94 : 332,200.64 = 71,672.25 : x
  2. Step 2: Convert to fraction form
    221,431.94/332,200.64 = 71,672.25/x
  3. Step 3: Cross multiply
    221,431.94x = 332,200.64 × 71,672.25
  4. Step 4: Simplify right side
    221,431.94x = 23,809,566,961.88
  5. Step 5: Solve for x
    x = 23,809,566,961.88/221,431.94
  6. Step 6: Final answer
    x = 107,525.44

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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.