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Finding the Fourth Proportional to 351,680.44, 485,319.12 and 190,536.60

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Solution

The fourth proportional to 351,680.44, 485,319.12 and 190,536.60 is: 262,940.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,680.44 : 485,319.12 = 190,536.60 : x
  2. Step 2: Convert to fraction form
    351,680.44/485,319.12 = 190,536.60/x
  3. Step 3: Cross multiply
    351,680.44x = 485,319.12 × 190,536.60
  4. Step 4: Simplify right side
    351,680.44x = 92,471,055,039.79
  5. Step 5: Solve for x
    x = 92,471,055,039.79/351,680.44
  6. Step 6: Final answer
    x = 262,940.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.