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Finding the Fourth Proportional to 422,286.48, 633,430.20 and 126,798.48

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Solution

The fourth proportional to 422,286.48, 633,430.20 and 126,798.48 is: 190,197.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,286.48 : 633,430.20 = 126,798.48 : x
  2. Step 2: Convert to fraction form
    422,286.48/633,430.20 = 126,798.48/x
  3. Step 3: Cross multiply
    422,286.48x = 633,430.20 × 126,798.48
  4. Step 4: Simplify right side
    422,286.48x = 80,317,986,546.10
  5. Step 5: Solve for x
    x = 80,317,986,546.10/422,286.48
  6. Step 6: Final answer
    x = 190,197.86

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1.5x scale

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.