Home / 326,469.40-489,704.10-89,811.70

Finding the Fourth Proportional to 326,469.40, 489,704.10 and 89,811.70

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Solution

The fourth proportional to 326,469.40, 489,704.10 and 89,811.70 is: 134,717.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,469.40 : 489,704.10 = 89,811.70 : x
  2. Step 2: Convert to fraction form
    326,469.40/489,704.10 = 89,811.70/x
  3. Step 3: Cross multiply
    326,469.40x = 489,704.10 × 89,811.70
  4. Step 4: Simplify right side
    326,469.40x = 43,981,157,717.97
  5. Step 5: Solve for x
    x = 43,981,157,717.97/326,469.40
  6. Step 6: Final answer
    x = 134,717.55

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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.