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Finding the Fourth Proportional to 279,214.43, 418,821.71 and 195,138.79

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Solution

The fourth proportional to 279,214.43, 418,821.71 and 195,138.79 is: 292,708.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,214.43 : 418,821.71 = 195,138.79 : x
  2. Step 2: Convert to fraction form
    279,214.43/418,821.71 = 195,138.79/x
  3. Step 3: Cross multiply
    279,214.43x = 418,821.71 × 195,138.79
  4. Step 4: Simplify right side
    279,214.43x = 81,728,359,692.38
  5. Step 5: Solve for x
    x = 81,728,359,692.38/279,214.43
  6. Step 6: Final answer
    x = 292,708.23

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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.