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Finding the Fourth Proportional to 200,394,511.20, 300,591,766.80 and 200,394,511.20

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Solution

The fourth proportional to 200,394,511.20, 300,591,766.80 and 200,394,511.20 is: 300,591,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,394,511.20 : 300,591,766.80 = 200,394,511.20 : x
  2. Step 2: Convert to fraction form
    200,394,511.20/300,591,766.80 = 200,394,511.20/x
  3. Step 3: Cross multiply
    200,394,511.20x = 300,591,766.80 × 200,394,511.20
  4. Step 4: Simplify right side
    200,394,511.20x = 60,236,940,178,630,384
  5. Step 5: Solve for x
    x = 60,236,940,178,630,384/200,394,511.20
  6. Step 6: Final answer
    x = 300,591,766.80

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1.5x scale

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.