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Finding the Fourth Proportional to 279,958.35, 419,939.10 and 69,596.29

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Solution

The fourth proportional to 279,958.35, 419,939.10 and 69,596.29 is: 104,394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,958.35 : 419,939.10 = 69,596.29 : x
  2. Step 2: Convert to fraction form
    279,958.35/419,939.10 = 69,596.29/x
  3. Step 3: Cross multiply
    279,958.35x = 419,939.10 × 69,596.29
  4. Step 4: Simplify right side
    279,958.35x = 29,226,203,385.94
  5. Step 5: Solve for x
    x = 29,226,203,385.94/279,958.35
  6. Step 6: Final answer
    x = 104,394.83

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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.