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Finding the Fourth Proportional to 298,735,540.60, 448,103,310.90 and 280,595,687.80

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Solution

The fourth proportional to 298,735,540.60, 448,103,310.90 and 280,595,687.80 is: 420,893,531.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,735,540.60 : 448,103,310.90 = 280,595,687.80 : x
  2. Step 2: Convert to fraction form
    298,735,540.60/448,103,310.90 = 280,595,687.80/x
  3. Step 3: Cross multiply
    298,735,540.60x = 448,103,310.90 × 280,595,687.80
  4. Step 4: Simplify right side
    298,735,540.60x = 125,735,856,727,442,736
  5. Step 5: Solve for x
    x = 125,735,856,727,442,736/298,735,540.60
  6. Step 6: Final answer
    x = 420,893,531.70

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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.