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Finding the Fourth Proportional to 279,959,818.20, 419,939,727.30 and 222,139,037.40

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Solution

The fourth proportional to 279,959,818.20, 419,939,727.30 and 222,139,037.40 is: 333,208,556.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,959,818.20 : 419,939,727.30 = 222,139,037.40 : x
  2. Step 2: Convert to fraction form
    279,959,818.20/419,939,727.30 = 222,139,037.40/x
  3. Step 3: Cross multiply
    279,959,818.20x = 419,939,727.30 × 222,139,037.40
  4. Step 4: Simplify right side
    279,959,818.20x = 93,285,006,788,440,512
  5. Step 5: Solve for x
    x = 93,285,006,788,440,512/279,959,818.20
  6. Step 6: Final answer
    x = 333,208,556.10

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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.