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Finding the Fourth Proportional to 221,431.79, 332,200.41 and 71,672.10

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Solution

The fourth proportional to 221,431.79, 332,200.41 and 71,672.10 is: 107,525.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,431.79 : 332,200.41 = 71,672.10 : x
  2. Step 2: Convert to fraction form
    221,431.79/332,200.41 = 71,672.10/x
  3. Step 3: Cross multiply
    221,431.79x = 332,200.41 × 71,672.10
  4. Step 4: Simplify right side
    221,431.79x = 23,809,500,647.20
  5. Step 5: Solve for x
    x = 23,809,500,647.20/221,431.79
  6. Step 6: Final answer
    x = 107,525.22

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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.