Home / 326,729.25-489,634.20-259,872.66

Finding the Fourth Proportional to 326,729.25, 489,634.20 and 259,872.66

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Solution

The fourth proportional to 326,729.25, 489,634.20 and 259,872.66 is: 389,443.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,729.25 : 489,634.20 = 259,872.66 : x
  2. Step 2: Convert to fraction form
    326,729.25/489,634.20 = 259,872.66/x
  3. Step 3: Cross multiply
    326,729.25x = 489,634.20 × 259,872.66
  4. Step 4: Simplify right side
    326,729.25x = 127,242,541,980.97
  5. Step 5: Solve for x
    x = 127,242,541,980.97/326,729.25
  6. Step 6: Final answer
    x = 389,443.38

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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.