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Finding the Fourth Proportional to 422,338.60, 632,624.70 and 197,890.60

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Solution

The fourth proportional to 422,338.60, 632,624.70 and 197,890.60 is: 296,422.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,338.60 : 632,624.70 = 197,890.60 : x
  2. Step 2: Convert to fraction form
    422,338.60/632,624.70 = 197,890.60/x
  3. Step 3: Cross multiply
    422,338.60x = 632,624.70 × 197,890.60
  4. Step 4: Simplify right side
    422,338.60x = 125,190,481,457.82
  5. Step 5: Solve for x
    x = 125,190,481,457.82/422,338.60
  6. Step 6: Final answer
    x = 296,422.07

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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.