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Finding the Fourth Proportional to 221,105.81, 331,601.34 and 63,297.43

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Solution

The fourth proportional to 221,105.81, 331,601.34 and 63,297.43 is: 94,929.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,105.81 : 331,601.34 = 63,297.43 : x
  2. Step 2: Convert to fraction form
    221,105.81/331,601.34 = 63,297.43/x
  3. Step 3: Cross multiply
    221,105.81x = 331,601.34 × 63,297.43
  4. Step 4: Simplify right side
    221,105.81x = 20,989,512,606.56
  5. Step 5: Solve for x
    x = 20,989,512,606.56/221,105.81
  6. Step 6: Final answer
    x = 94,929.72

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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.