Home / 419,719.78-579,196.44-228,729.06

Finding the Fourth Proportional to 419,719.78, 579,196.44 and 228,729.06

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Solution

The fourth proportional to 419,719.78, 579,196.44 and 228,729.06 is: 315,636.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,719.78 : 579,196.44 = 228,729.06 : x
  2. Step 2: Convert to fraction form
    419,719.78/579,196.44 = 228,729.06/x
  3. Step 3: Cross multiply
    419,719.78x = 579,196.44 × 228,729.06
  4. Step 4: Simplify right side
    419,719.78x = 132,479,057,276.55
  5. Step 5: Solve for x
    x = 132,479,057,276.55/419,719.78
  6. Step 6: Final answer
    x = 315,636.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.