Home / 279,837.90-419,756.83-69,475.84

Finding the Fourth Proportional to 279,837.90, 419,756.83 and 69,475.84

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Solution

The fourth proportional to 279,837.90, 419,756.83 and 69,475.84 is: 104,213.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,837.90 : 419,756.83 = 69,475.84 : x
  2. Step 2: Convert to fraction form
    279,837.90/419,756.83 = 69,475.84/x
  3. Step 3: Cross multiply
    279,837.90x = 419,756.83 × 69,475.84
  4. Step 4: Simplify right side
    279,837.90x = 29,162,958,359.99
  5. Step 5: Solve for x
    x = 29,162,958,359.99/279,837.90
  6. Step 6: Final answer
    x = 104,213.76

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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.