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Finding the Fourth Proportional to 326,330.88, 489,274.80 and 166,012.80

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Solution

The fourth proportional to 326,330.88, 489,274.80 and 166,012.80 is: 248,906.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,330.88 : 489,274.80 = 166,012.80 : x
  2. Step 2: Convert to fraction form
    326,330.88/489,274.80 = 166,012.80/x
  3. Step 3: Cross multiply
    326,330.88x = 489,274.80 × 166,012.80
  4. Step 4: Simplify right side
    326,330.88x = 81,225,879,517.44
  5. Step 5: Solve for x
    x = 81,225,879,517.44/326,330.88
  6. Step 6: Final answer
    x = 248,906.51

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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.