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Finding the Fourth Proportional to 386,654.26, 579,843.01 and 133,866.90

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Solution

The fourth proportional to 386,654.26, 579,843.01 and 133,866.90 is: 200,752.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,654.26 : 579,843.01 = 133,866.90 : x
  2. Step 2: Convert to fraction form
    386,654.26/579,843.01 = 133,866.90/x
  3. Step 3: Cross multiply
    386,654.26x = 579,843.01 × 133,866.90
  4. Step 4: Simplify right side
    386,654.26x = 77,621,786,235.37
  5. Step 5: Solve for x
    x = 77,621,786,235.37/386,654.26
  6. Step 6: Final answer
    x = 200,752.44

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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.