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Finding the Fourth Proportional to 387,672.95, 534,910.23 and 226,496.86

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Solution

The fourth proportional to 387,672.95, 534,910.23 and 226,496.86 is: 312,519.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,672.95 : 534,910.23 = 226,496.86 : x
  2. Step 2: Convert to fraction form
    387,672.95/534,910.23 = 226,496.86/x
  3. Step 3: Cross multiply
    387,672.95x = 534,910.23 × 226,496.86
  4. Step 4: Simplify right side
    387,672.95x = 121,155,486,139.60
  5. Step 5: Solve for x
    x = 121,155,486,139.60/387,672.95
  6. Step 6: Final answer
    x = 312,519.83

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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.