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Finding the Fourth Proportional to 221,620.38, 332,430.56 and 55,408.38

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Solution

The fourth proportional to 221,620.38, 332,430.56 and 55,408.38 is: 83,112.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,620.38 : 332,430.56 = 55,408.38 : x
  2. Step 2: Convert to fraction form
    221,620.38/332,430.56 = 55,408.38/x
  3. Step 3: Cross multiply
    221,620.38x = 332,430.56 × 55,408.38
  4. Step 4: Simplify right side
    221,620.38x = 18,419,438,792.09
  5. Step 5: Solve for x
    x = 18,419,438,792.09/221,620.38
  6. Step 6: Final answer
    x = 83,112.57

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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.