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Finding the Fourth Proportional to 215,604.89, 323,408.60 and 55,669.92

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Solution

The fourth proportional to 215,604.89, 323,408.60 and 55,669.92 is: 83,505.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,604.89 : 323,408.60 = 55,669.92 : x
  2. Step 2: Convert to fraction form
    215,604.89/323,408.60 = 55,669.92/x
  3. Step 3: Cross multiply
    215,604.89x = 323,408.60 × 55,669.92
  4. Step 4: Simplify right side
    215,604.89x = 18,004,129,606.94
  5. Step 5: Solve for x
    x = 18,004,129,606.94/215,604.89
  6. Step 6: Final answer
    x = 83,505.20

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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.