Home / 279,936,015.40-419,904,023.10-261,796,162.60

Finding the Fourth Proportional to 279,936,015.40, 419,904,023.10 and 261,796,162.60

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Solution

The fourth proportional to 279,936,015.40, 419,904,023.10 and 261,796,162.60 is: 392,694,243.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,015.40 : 419,904,023.10 = 261,796,162.60 : x
  2. Step 2: Convert to fraction form
    279,936,015.40/419,904,023.10 = 261,796,162.60/x
  3. Step 3: Cross multiply
    279,936,015.40x = 419,904,023.10 × 261,796,162.60
  4. Step 4: Simplify right side
    279,936,015.40x = 109,929,261,907,881,760
  5. Step 5: Solve for x
    x = 109,929,261,907,881,760/279,936,015.40
  6. Step 6: Final answer
    x = 392,694,243.90

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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.