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Finding the Fourth Proportional to 221,939.56, 332,840.22 and 74,161

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Solution

The fourth proportional to 221,939.56, 332,840.22 and 74,161 is: 111,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,939.56 : 332,840.22 = 74,161 : x
  2. Step 2: Convert to fraction form
    221,939.56/332,840.22 = 74,161/x
  3. Step 3: Cross multiply
    221,939.56x = 332,840.22 × 74,161
  4. Step 4: Simplify right side
    221,939.56x = 24,683,763,555.42
  5. Step 5: Solve for x
    x = 24,683,763,555.42/221,939.56
  6. Step 6: Final answer
    x = 111,218.40

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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.