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Finding the Fourth Proportional to 221,016, 331,524.96 and 73,272

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Solution

The fourth proportional to 221,016, 331,524.96 and 73,272 is: 109,908.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,016 : 331,524.96 = 73,272 : x
  2. Step 2: Convert to fraction form
    221,016/331,524.96 = 73,272/x
  3. Step 3: Cross multiply
    221,016x = 331,524.96 × 73,272
  4. Step 4: Simplify right side
    221,016x = 24,291,496,869.12
  5. Step 5: Solve for x
    x = 24,291,496,869.12/221,016
  6. Step 6: Final answer
    x = 109,908.32

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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.