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Finding the Fourth Proportional to 351,613.32, 485,107.02 and 198,629.16

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Solution

The fourth proportional to 351,613.32, 485,107.02 and 198,629.16 is: 274,040.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,613.32 : 485,107.02 = 198,629.16 : x
  2. Step 2: Convert to fraction form
    351,613.32/485,107.02 = 198,629.16/x
  3. Step 3: Cross multiply
    351,613.32x = 485,107.02 × 198,629.16
  4. Step 4: Simplify right side
    351,613.32x = 96,356,399,892.70
  5. Step 5: Solve for x
    x = 96,356,399,892.70/351,613.32
  6. Step 6: Final answer
    x = 274,040.81

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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.