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Finding the Fourth Proportional to 303,418.30, 455,309.70 and 125,906.80

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Solution

The fourth proportional to 303,418.30, 455,309.70 and 125,906.80 is: 188,935.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,418.30 : 455,309.70 = 125,906.80 : x
  2. Step 2: Convert to fraction form
    303,418.30/455,309.70 = 125,906.80/x
  3. Step 3: Cross multiply
    303,418.30x = 455,309.70 × 125,906.80
  4. Step 4: Simplify right side
    303,418.30x = 57,326,587,335.96
  5. Step 5: Solve for x
    x = 57,326,587,335.96/303,418.30
  6. Step 6: Final answer
    x = 188,935.83

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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.