Home / 325,986.20-489,003.60-115,596.80

Finding the Fourth Proportional to 325,986.20, 489,003.60 and 115,596.80

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Solution

The fourth proportional to 325,986.20, 489,003.60 and 115,596.80 is: 173,403.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,986.20 : 489,003.60 = 115,596.80 : x
  2. Step 2: Convert to fraction form
    325,986.20/489,003.60 = 115,596.80/x
  3. Step 3: Cross multiply
    325,986.20x = 489,003.60 × 115,596.80
  4. Step 4: Simplify right side
    325,986.20x = 56,527,251,348.48
  5. Step 5: Solve for x
    x = 56,527,251,348.48/325,986.20
  6. Step 6: Final answer
    x = 173,403.82

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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.