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Finding the Fourth Proportional to 221,145.48, 331,729.56 and 63,375.30

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Solution

The fourth proportional to 221,145.48, 331,729.56 and 63,375.30 is: 95,066.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,145.48 : 331,729.56 = 63,375.30 : x
  2. Step 2: Convert to fraction form
    221,145.48/331,729.56 = 63,375.30/x
  3. Step 3: Cross multiply
    221,145.48x = 331,729.56 × 63,375.30
  4. Step 4: Simplify right side
    221,145.48x = 21,023,460,383.87
  5. Step 5: Solve for x
    x = 21,023,460,383.87/221,145.48
  6. Step 6: Final answer
    x = 95,066.20

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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.