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Finding the Fourth Proportional to 221,890, 332,835 and 74,146

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Solution

The fourth proportional to 221,890, 332,835 and 74,146 is: 111,219

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,890 : 332,835 = 74,146 : x
  2. Step 2: Convert to fraction form
    221,890/332,835 = 74,146/x
  3. Step 3: Cross multiply
    221,890x = 332,835 × 74,146
  4. Step 4: Simplify right side
    221,890x = 24,678,383,910
  5. Step 5: Solve for x
    x = 24,678,383,910/221,890
  6. Step 6: Final answer
    x = 111,219

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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.