Home / 422,748.27-633,409.20-209,231.46

Finding the Fourth Proportional to 422,748.27, 633,409.20 and 209,231.46

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Solution

The fourth proportional to 422,748.27, 633,409.20 and 209,231.46 is: 313,494.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,748.27 : 633,409.20 = 209,231.46 : x
  2. Step 2: Convert to fraction form
    422,748.27/633,409.20 = 209,231.46/x
  3. Step 3: Cross multiply
    422,748.27x = 633,409.20 × 209,231.46
  4. Step 4: Simplify right side
    422,748.27x = 132,529,131,693.43
  5. Step 5: Solve for x
    x = 132,529,131,693.43/422,748.27
  6. Step 6: Final answer
    x = 313,494.20

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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.