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Finding the Fourth Proportional to 279,957,481.20, 419,936,221.80 and 222,136,700.40

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Solution

The fourth proportional to 279,957,481.20, 419,936,221.80 and 222,136,700.40 is: 333,205,050.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,957,481.20 : 419,936,221.80 = 222,136,700.40 : x
  2. Step 2: Convert to fraction form
    279,957,481.20/419,936,221.80 = 222,136,700.40/x
  3. Step 3: Cross multiply
    279,957,481.20x = 419,936,221.80 × 222,136,700.40
  4. Step 4: Simplify right side
    279,957,481.20x = 93,283,246,689,094,560
  5. Step 5: Solve for x
    x = 93,283,246,689,094,560/279,957,481.20
  6. Step 6: Final answer
    x = 333,205,050.60

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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.