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Finding the Fourth Proportional to 422,329.60, 632,021.76 and 345,540.68

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Solution

The fourth proportional to 422,329.60, 632,021.76 and 345,540.68 is: 517,106.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,329.60 : 632,021.76 = 345,540.68 : x
  2. Step 2: Convert to fraction form
    422,329.60/632,021.76 = 345,540.68/x
  3. Step 3: Cross multiply
    422,329.60x = 632,021.76 × 345,540.68
  4. Step 4: Simplify right side
    422,329.60x = 218,389,228,725.20
  5. Step 5: Solve for x
    x = 218,389,228,725.20/422,329.60
  6. Step 6: Final answer
    x = 517,106.14

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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.