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Finding the Fourth Proportional to 387,672.89, 534,910.15 and 226,496.81

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Solution

The fourth proportional to 387,672.89, 534,910.15 and 226,496.81 is: 312,519.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,672.89 : 534,910.15 = 226,496.81 : x
  2. Step 2: Convert to fraction form
    387,672.89/534,910.15 = 226,496.81/x
  3. Step 3: Cross multiply
    387,672.89x = 534,910.15 × 226,496.81
  4. Step 4: Simplify right side
    387,672.89x = 121,155,442,611.62
  5. Step 5: Solve for x
    x = 121,155,442,611.62/387,672.89
  6. Step 6: Final answer
    x = 312,519.77

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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.