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Finding the Fourth Proportional to 215,181, 322,823.34 and 67,437

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Solution

The fourth proportional to 215,181, 322,823.34 and 67,437 is: 101,171.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,181 : 322,823.34 = 67,437 : x
  2. Step 2: Convert to fraction form
    215,181/322,823.34 = 67,437/x
  3. Step 3: Cross multiply
    215,181x = 322,823.34 × 67,437
  4. Step 4: Simplify right side
    215,181x = 21,770,237,579.58
  5. Step 5: Solve for x
    x = 21,770,237,579.58/215,181
  6. Step 6: Final answer
    x = 101,171.75

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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.