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Finding the Fourth Proportional to 266,555,467.80, 399,861,195.30 and 84,760,363.80

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Solution

The fourth proportional to 266,555,467.80, 399,861,195.30 and 84,760,363.80 is: 127,149,447.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,555,467.80 : 399,861,195.30 = 84,760,363.80 : x
  2. Step 2: Convert to fraction form
    266,555,467.80/399,861,195.30 = 84,760,363.80/x
  3. Step 3: Cross multiply
    266,555,467.80x = 399,861,195.30 × 84,760,363.80
  4. Step 4: Simplify right side
    266,555,467.80x = 33,892,380,383,130,848
  5. Step 5: Solve for x
    x = 33,892,380,383,130,848/266,555,467.80
  6. Step 6: Final answer
    x = 127,149,447.22

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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.