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Finding the Fourth Proportional to 276,791.80, 415,166.10 and 108,279.40

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Solution

The fourth proportional to 276,791.80, 415,166.10 and 108,279.40 is: 162,410.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,791.80 : 415,166.10 = 108,279.40 : x
  2. Step 2: Convert to fraction form
    276,791.80/415,166.10 = 108,279.40/x
  3. Step 3: Cross multiply
    276,791.80x = 415,166.10 × 108,279.40
  4. Step 4: Simplify right side
    276,791.80x = 44,953,936,208.34
  5. Step 5: Solve for x
    x = 44,953,936,208.34/276,791.80
  6. Step 6: Final answer
    x = 162,410.65

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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.