Home / 279,219.78-418,824.27-79,541.46

Finding the Fourth Proportional to 279,219.78, 418,824.27 and 79,541.46

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Solution

The fourth proportional to 279,219.78, 418,824.27 and 79,541.46 is: 119,310.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,219.78 : 418,824.27 = 79,541.46 : x
  2. Step 2: Convert to fraction form
    279,219.78/418,824.27 = 79,541.46/x
  3. Step 3: Cross multiply
    279,219.78x = 418,824.27 × 79,541.46
  4. Step 4: Simplify right side
    279,219.78x = 33,313,893,919.23
  5. Step 5: Solve for x
    x = 33,313,893,919.23/279,219.78
  6. Step 6: Final answer
    x = 119,310.65

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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.