Home / 305,605.05-422,022.15-196,900.22

Finding the Fourth Proportional to 305,605.05, 422,022.15 and 196,900.22

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Solution

The fourth proportional to 305,605.05, 422,022.15 and 196,900.22 is: 271,907.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,605.05 : 422,022.15 = 196,900.22 : x
  2. Step 2: Convert to fraction form
    305,605.05/422,022.15 = 196,900.22/x
  3. Step 3: Cross multiply
    305,605.05x = 422,022.15 × 196,900.22
  4. Step 4: Simplify right side
    305,605.05x = 83,096,252,861.05
  5. Step 5: Solve for x
    x = 83,096,252,861.05/305,605.05
  6. Step 6: Final answer
    x = 271,907.33

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1.5x scale

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.