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Finding the Fourth Proportional to 221,874, 332,811 and 74,130

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Solution

The fourth proportional to 221,874, 332,811 and 74,130 is: 111,195

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,874 : 332,811 = 74,130 : x
  2. Step 2: Convert to fraction form
    221,874/332,811 = 74,130/x
  3. Step 3: Cross multiply
    221,874x = 332,811 × 74,130
  4. Step 4: Simplify right side
    221,874x = 24,671,279,430
  5. Step 5: Solve for x
    x = 24,671,279,430/221,874
  6. Step 6: Final answer
    x = 111,195

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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.