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Finding the Fourth Proportional to 326,132.40, 489,198.60 and 89,474.70

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Solution

The fourth proportional to 326,132.40, 489,198.60 and 89,474.70 is: 134,212.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,132.40 : 489,198.60 = 89,474.70 : x
  2. Step 2: Convert to fraction form
    326,132.40/489,198.60 = 89,474.70/x
  3. Step 3: Cross multiply
    326,132.40x = 489,198.60 × 89,474.70
  4. Step 4: Simplify right side
    326,132.40x = 43,770,897,975.42
  5. Step 5: Solve for x
    x = 43,770,897,975.42/326,132.40
  6. Step 6: Final answer
    x = 134,212.05

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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.