Home / 306,205.43-422,769.71-273,839.45

Finding the Fourth Proportional to 306,205.43, 422,769.71 and 273,839.45

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Solution

The fourth proportional to 306,205.43, 422,769.71 and 273,839.45 is: 378,082.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,205.43 : 422,769.71 = 273,839.45 : x
  2. Step 2: Convert to fraction form
    306,205.43/422,769.71 = 273,839.45/x
  3. Step 3: Cross multiply
    306,205.43x = 422,769.71 × 273,839.45
  4. Step 4: Simplify right side
    306,205.43x = 115,771,023,433.81
  5. Step 5: Solve for x
    x = 115,771,023,433.81/306,205.43
  6. Step 6: Final answer
    x = 378,082.86

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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.