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Finding the Fourth Proportional to 221,391.70, 332,136.15 and 109,125.70

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Solution

The fourth proportional to 221,391.70, 332,136.15 and 109,125.70 is: 163,712.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,391.70 : 332,136.15 = 109,125.70 : x
  2. Step 2: Convert to fraction form
    221,391.70/332,136.15 = 109,125.70/x
  3. Step 3: Cross multiply
    221,391.70x = 332,136.15 × 109,125.70
  4. Step 4: Simplify right side
    221,391.70x = 36,244,589,864.06
  5. Step 5: Solve for x
    x = 36,244,589,864.06/221,391.70
  6. Step 6: Final answer
    x = 163,712.51

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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.