Home / 279,987,679.44-420,001,699.56-107,464,493.20

Finding the Fourth Proportional to 279,987,679.44, 420,001,699.56 and 107,464,493.20

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Solution

The fourth proportional to 279,987,679.44, 420,001,699.56 and 107,464,493.20 is: 161,204,485.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,987,679.44 : 420,001,699.56 = 107,464,493.20 : x
  2. Step 2: Convert to fraction form
    279,987,679.44/420,001,699.56 = 107,464,493.20/x
  3. Step 3: Cross multiply
    279,987,679.44x = 420,001,699.56 × 107,464,493.20
  4. Step 4: Simplify right side
    279,987,679.44x = 45,135,269,786,354,064
  5. Step 5: Solve for x
    x = 45,135,269,786,354,064/279,987,679.44
  6. Step 6: Final answer
    x = 161,204,485.41

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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.