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Finding the Fourth Proportional to 215,388.50, 297,231.22 and 134,860.44

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Solution

The fourth proportional to 215,388.50, 297,231.22 and 134,860.44 is: 186,104.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,388.50 : 297,231.22 = 134,860.44 : x
  2. Step 2: Convert to fraction form
    215,388.50/297,231.22 = 134,860.44/x
  3. Step 3: Cross multiply
    215,388.50x = 297,231.22 × 134,860.44
  4. Step 4: Simplify right side
    215,388.50x = 40,084,733,110.94
  5. Step 5: Solve for x
    x = 40,084,733,110.94/215,388.50
  6. Step 6: Final answer
    x = 186,104.33

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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.