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Finding the Fourth Proportional to 422,550.74, 633,692.30 and 138,175.59

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Solution

The fourth proportional to 422,550.74, 633,692.30 and 138,175.59 is: 207,219.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,550.74 : 633,692.30 = 138,175.59 : x
  2. Step 2: Convert to fraction form
    422,550.74/633,692.30 = 138,175.59/x
  3. Step 3: Cross multiply
    422,550.74x = 633,692.30 × 138,175.59
  4. Step 4: Simplify right side
    422,550.74x = 87,560,807,776.40
  5. Step 5: Solve for x
    x = 87,560,807,776.40/422,550.74
  6. Step 6: Final answer
    x = 207,219.63

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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.