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Finding the Fourth Proportional to 214,991.08, 322,627.08 and 81,872.62

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Solution

The fourth proportional to 214,991.08, 322,627.08 and 81,872.62 is: 122,862.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,991.08 : 322,627.08 = 81,872.62 : x
  2. Step 2: Convert to fraction form
    214,991.08/322,627.08 = 81,872.62/x
  3. Step 3: Cross multiply
    214,991.08x = 322,627.08 × 81,872.62
  4. Step 4: Simplify right side
    214,991.08x = 26,414,324,322.55
  5. Step 5: Solve for x
    x = 26,414,324,322.55/214,991.08
  6. Step 6: Final answer
    x = 122,862.42

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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.