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Finding the Fourth Proportional to 422,958.94, 634,475.68 and 119,355.80

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Solution

The fourth proportional to 422,958.94, 634,475.68 and 119,355.80 is: 179,044.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,958.94 : 634,475.68 = 119,355.80 : x
  2. Step 2: Convert to fraction form
    422,958.94/634,475.68 = 119,355.80/x
  3. Step 3: Cross multiply
    422,958.94x = 634,475.68 × 119,355.80
  4. Step 4: Simplify right side
    422,958.94x = 75,728,352,366.94
  5. Step 5: Solve for x
    x = 75,728,352,366.94/422,958.94
  6. Step 6: Final answer
    x = 179,044.22

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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.