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Finding the Fourth Proportional to 303,766.38, 455,814.09 and 126,395.82

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Solution

The fourth proportional to 303,766.38, 455,814.09 and 126,395.82 is: 189,662.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,766.38 : 455,814.09 = 126,395.82 : x
  2. Step 2: Convert to fraction form
    303,766.38/455,814.09 = 126,395.82/x
  3. Step 3: Cross multiply
    303,766.38x = 455,814.09 × 126,395.82
  4. Step 4: Simplify right side
    303,766.38x = 57,612,995,673.10
  5. Step 5: Solve for x
    x = 57,612,995,673.10/303,766.38
  6. Step 6: Final answer
    x = 189,662.19

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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.