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Finding the Fourth Proportional to 351,906.93, 485,504.28 and 231,113.66

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Solution

The fourth proportional to 351,906.93, 485,504.28 and 231,113.66 is: 318,853.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,906.93 : 485,504.28 = 231,113.66 : x
  2. Step 2: Convert to fraction form
    351,906.93/485,504.28 = 231,113.66/x
  3. Step 3: Cross multiply
    351,906.93x = 485,504.28 × 231,113.66
  4. Step 4: Simplify right side
    351,906.93x = 112,206,668,668.94
  5. Step 5: Solve for x
    x = 112,206,668,668.94/351,906.93
  6. Step 6: Final answer
    x = 318,853.25

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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.