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Finding the Fourth Proportional to 217,712.54, 326,589.43 and 84,603.07

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Solution

The fourth proportional to 217,712.54, 326,589.43 and 84,603.07 is: 126,912.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,712.54 : 326,589.43 = 84,603.07 : x
  2. Step 2: Convert to fraction form
    217,712.54/326,589.43 = 84,603.07/x
  3. Step 3: Cross multiply
    217,712.54x = 326,589.43 × 84,603.07
  4. Step 4: Simplify right side
    217,712.54x = 27,630,466,925.84
  5. Step 5: Solve for x
    x = 27,630,466,925.84/217,712.54
  6. Step 6: Final answer
    x = 126,912.61

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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.