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Finding the Fourth Proportional to 206,597,008.80, 309,895,513.20 and 206,597,008.80

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Solution

The fourth proportional to 206,597,008.80, 309,895,513.20 and 206,597,008.80 is: 309,895,513.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,597,008.80 : 309,895,513.20 = 206,597,008.80 : x
  2. Step 2: Convert to fraction form
    206,597,008.80/309,895,513.20 = 206,597,008.80/x
  3. Step 3: Cross multiply
    206,597,008.80x = 309,895,513.20 × 206,597,008.80
  4. Step 4: Simplify right side
    206,597,008.80x = 64,023,486,067,660,920
  5. Step 5: Solve for x
    x = 64,023,486,067,660,920/206,597,008.80
  6. Step 6: Final answer
    x = 309,895,513.20

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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.