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Finding the Fourth Proportional to 422,791.45, 633,342.18 and 254,219.47

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Solution

The fourth proportional to 422,791.45, 633,342.18 and 254,219.47 is: 380,821.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,791.45 : 633,342.18 = 254,219.47 : x
  2. Step 2: Convert to fraction form
    422,791.45/633,342.18 = 254,219.47/x
  3. Step 3: Cross multiply
    422,791.45x = 633,342.18 × 254,219.47
  4. Step 4: Simplify right side
    422,791.45x = 161,007,913,328.25
  5. Step 5: Solve for x
    x = 161,007,913,328.25/422,791.45
  6. Step 6: Final answer
    x = 380,821.12

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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.