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Finding the Fourth Proportional to 221,432.78, 332,201.90 and 71,673.10

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Solution

The fourth proportional to 221,432.78, 332,201.90 and 71,673.10 is: 107,526.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,432.78 : 332,201.90 = 71,673.10 : x
  2. Step 2: Convert to fraction form
    221,432.78/332,201.90 = 71,673.10/x
  3. Step 3: Cross multiply
    221,432.78x = 332,201.90 × 71,673.10
  4. Step 4: Simplify right side
    221,432.78x = 23,809,939,998.89
  5. Step 5: Solve for x
    x = 23,809,939,998.89/221,432.78
  6. Step 6: Final answer
    x = 107,526.72

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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.