Home / 204,723.84-306,940.32-78,257.56

Finding the Fourth Proportional to 204,723.84, 306,940.32 and 78,257.56

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Solution

The fourth proportional to 204,723.84, 306,940.32 and 78,257.56 is: 117,330.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,723.84 : 306,940.32 = 78,257.56 : x
  2. Step 2: Convert to fraction form
    204,723.84/306,940.32 = 78,257.56/x
  3. Step 3: Cross multiply
    204,723.84x = 306,940.32 × 78,257.56
  4. Step 4: Simplify right side
    204,723.84x = 24,020,400,508.82
  5. Step 5: Solve for x
    x = 24,020,400,508.82/204,723.84
  6. Step 6: Final answer
    x = 117,330.74

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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.