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Finding the Fourth Proportional to 217,871.52, 300,662.73 and 122,408.97

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Solution

The fourth proportional to 217,871.52, 300,662.73 and 122,408.97 is: 168,924.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,871.52 : 300,662.73 = 122,408.97 : x
  2. Step 2: Convert to fraction form
    217,871.52/300,662.73 = 122,408.97/x
  3. Step 3: Cross multiply
    217,871.52x = 300,662.73 × 122,408.97
  4. Step 4: Simplify right side
    217,871.52x = 36,803,815,096.69
  5. Step 5: Solve for x
    x = 36,803,815,096.69/217,871.52
  6. Step 6: Final answer
    x = 168,924.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.