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Finding the Fourth Proportional to 221,119.20, 331,338.60 and 164,694.60

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Solution

The fourth proportional to 221,119.20, 331,338.60 and 164,694.60 is: 246,788.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,119.20 : 331,338.60 = 164,694.60 : x
  2. Step 2: Convert to fraction form
    221,119.20/331,338.60 = 164,694.60/x
  3. Step 3: Cross multiply
    221,119.20x = 331,338.60 × 164,694.60
  4. Step 4: Simplify right side
    221,119.20x = 54,569,678,191.56
  5. Step 5: Solve for x
    x = 54,569,678,191.56/221,119.20
  6. Step 6: Final answer
    x = 246,788.51

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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.