Home / 279,676.40-419,233.69-89,997.36

Finding the Fourth Proportional to 279,676.40, 419,233.69 and 89,997.36

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Solution

The fourth proportional to 279,676.40, 419,233.69 and 89,997.36 is: 134,905.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,676.40 : 419,233.69 = 89,997.36 : x
  2. Step 2: Convert to fraction form
    279,676.40/419,233.69 = 89,997.36/x
  3. Step 3: Cross multiply
    279,676.40x = 419,233.69 × 89,997.36
  4. Step 4: Simplify right side
    279,676.40x = 37,729,924,873.07
  5. Step 5: Solve for x
    x = 37,729,924,873.07/279,676.40
  6. Step 6: Final answer
    x = 134,905.65

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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.