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Finding the Fourth Proportional to 221,443.20, 331,824.60 and 165,018.60

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Solution

The fourth proportional to 221,443.20, 331,824.60 and 165,018.60 is: 247,274.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,443.20 : 331,824.60 = 165,018.60 : x
  2. Step 2: Convert to fraction form
    221,443.20/331,824.60 = 165,018.60/x
  3. Step 3: Cross multiply
    221,443.20x = 331,824.60 × 165,018.60
  4. Step 4: Simplify right side
    221,443.20x = 54,757,230,937.56
  5. Step 5: Solve for x
    x = 54,757,230,937.56/221,443.20
  6. Step 6: Final answer
    x = 247,274.38

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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.