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Finding the Fourth Proportional to 270,580.05, 405,755.89 and 81,067.36

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Solution

The fourth proportional to 270,580.05, 405,755.89 and 81,067.36 is: 121,566.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,580.05 : 405,755.89 = 81,067.36 : x
  2. Step 2: Convert to fraction form
    270,580.05/405,755.89 = 81,067.36/x
  3. Step 3: Cross multiply
    270,580.05x = 405,755.89 × 81,067.36
  4. Step 4: Simplify right side
    270,580.05x = 32,893,558,401.41
  5. Step 5: Solve for x
    x = 32,893,558,401.41/270,580.05
  6. Step 6: Final answer
    x = 121,566.83

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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.