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Finding the Fourth Proportional to 279,766.85, 419,650.28 and 69,404.79

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Solution

The fourth proportional to 279,766.85, 419,650.28 and 69,404.79 is: 104,107.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,766.85 : 419,650.28 = 69,404.79 : x
  2. Step 2: Convert to fraction form
    279,766.85/419,650.28 = 69,404.79/x
  3. Step 3: Cross multiply
    279,766.85x = 419,650.28 × 69,404.79
  4. Step 4: Simplify right side
    279,766.85x = 29,125,739,730.35
  5. Step 5: Solve for x
    x = 29,125,739,730.35/279,766.85
  6. Step 6: Final answer
    x = 104,107.19

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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.