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Finding the Fourth Proportional to 221,421.85, 332,132.78 and 132,775.45

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Solution

The fourth proportional to 221,421.85, 332,132.78 and 132,775.45 is: 199,163.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,421.85 : 332,132.78 = 132,775.45 : x
  2. Step 2: Convert to fraction form
    221,421.85/332,132.78 = 132,775.45/x
  3. Step 3: Cross multiply
    221,421.85x = 332,132.78 × 132,775.45
  4. Step 4: Simplify right side
    221,421.85x = 44,099,078,660.37
  5. Step 5: Solve for x
    x = 44,099,078,660.37/221,421.85
  6. Step 6: Final answer
    x = 199,163.18

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1.5x scale

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.