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Finding the Fourth Proportional to 279,937,339.20, 419,906,008.80 and 259,530,004.80

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Solution

The fourth proportional to 279,937,339.20, 419,906,008.80 and 259,530,004.80 is: 389,295,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,937,339.20 : 419,906,008.80 = 259,530,004.80 : x
  2. Step 2: Convert to fraction form
    279,937,339.20/419,906,008.80 = 259,530,004.80/x
  3. Step 3: Cross multiply
    279,937,339.20x = 419,906,008.80 × 259,530,004.80
  4. Step 4: Simplify right side
    279,937,339.20x = 108,978,208,479,412,848
  5. Step 5: Solve for x
    x = 108,978,208,479,412,848/279,937,339.20
  6. Step 6: Final answer
    x = 389,295,007.20

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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.