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Finding the Fourth Proportional to 228,865.78, 343,214.40 and 79,067.62

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Solution

The fourth proportional to 228,865.78, 343,214.40 and 79,067.62 is: 118,572.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,865.78 : 343,214.40 = 79,067.62 : x
  2. Step 2: Convert to fraction form
    228,865.78/343,214.40 = 79,067.62/x
  3. Step 3: Cross multiply
    228,865.78x = 343,214.40 × 79,067.62
  4. Step 4: Simplify right side
    228,865.78x = 27,137,145,757.73
  5. Step 5: Solve for x
    x = 27,137,145,757.73/228,865.78
  6. Step 6: Final answer
    x = 118,572.32

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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.