Home / 279,320.23-419,188.21-137,241.77

Finding the Fourth Proportional to 279,320.23, 419,188.21 and 137,241.77

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Solution

The fourth proportional to 279,320.23, 419,188.21 and 137,241.77 is: 205,964.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,320.23 : 419,188.21 = 137,241.77 : x
  2. Step 2: Convert to fraction form
    279,320.23/419,188.21 = 137,241.77/x
  3. Step 3: Cross multiply
    279,320.23x = 419,188.21 × 137,241.77
  4. Step 4: Simplify right side
    279,320.23x = 57,530,132,608.40
  5. Step 5: Solve for x
    x = 57,530,132,608.40/279,320.23
  6. Step 6: Final answer
    x = 205,964.79

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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.