Home / 279,163.82-418,740.06-68,803.58

Finding the Fourth Proportional to 279,163.82, 418,740.06 and 68,803.58

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Solution

The fourth proportional to 279,163.82, 418,740.06 and 68,803.58 is: 103,203.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,163.82 : 418,740.06 = 68,803.58 : x
  2. Step 2: Convert to fraction form
    279,163.82/418,740.06 = 68,803.58/x
  3. Step 3: Cross multiply
    279,163.82x = 418,740.06 × 68,803.58
  4. Step 4: Simplify right side
    279,163.82x = 28,810,815,217.41
  5. Step 5: Solve for x
    x = 28,810,815,217.41/279,163.82
  6. Step 6: Final answer
    x = 103,203.97

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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.