Home / 279,987,661.48-420,001,672.56-107,464,475.20

Finding the Fourth Proportional to 279,987,661.48, 420,001,672.56 and 107,464,475.20

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Solution

The fourth proportional to 279,987,661.48, 420,001,672.56 and 107,464,475.20 is: 161,204,458.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,987,661.48 : 420,001,672.56 = 107,464,475.20 : x
  2. Step 2: Convert to fraction form
    279,987,661.48/420,001,672.56 = 107,464,475.20/x
  3. Step 3: Cross multiply
    279,987,661.48x = 420,001,672.56 × 107,464,475.20
  4. Step 4: Simplify right side
    279,987,661.48x = 45,135,259,324,782,640
  5. Step 5: Solve for x
    x = 45,135,259,324,782,640/279,987,661.48
  6. Step 6: Final answer
    x = 161,204,458.39

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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.