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Finding the Fourth Proportional to 217,114.72, 299,583.48 and 121,625.44

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Solution

The fourth proportional to 217,114.72, 299,583.48 and 121,625.44 is: 167,823.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,114.72 : 299,583.48 = 121,625.44 : x
  2. Step 2: Convert to fraction form
    217,114.72/299,583.48 = 121,625.44/x
  3. Step 3: Cross multiply
    217,114.72x = 299,583.48 × 121,625.44
  4. Step 4: Simplify right side
    217,114.72x = 36,436,972,571.73
  5. Step 5: Solve for x
    x = 36,436,972,571.73/217,114.72
  6. Step 6: Final answer
    x = 167,823.59

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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.