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Finding the Fourth Proportional to 326,201.75, 489,185.22 and 112,911.71

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Solution

The fourth proportional to 326,201.75, 489,185.22 and 112,911.71 is: 169,326.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,201.75 : 489,185.22 = 112,911.71 : x
  2. Step 2: Convert to fraction form
    326,201.75/489,185.22 = 112,911.71/x
  3. Step 3: Cross multiply
    326,201.75x = 489,185.22 × 112,911.71
  4. Step 4: Simplify right side
    326,201.75x = 55,234,737,251.00
  5. Step 5: Solve for x
    x = 55,234,737,251.00/326,201.75
  6. Step 6: Final answer
    x = 169,326.92

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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.