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Finding the Fourth Proportional to 279,739.24, 419,200.62 and 139,304.68

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Solution

The fourth proportional to 279,739.24, 419,200.62 and 139,304.68 is: 208,753.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,739.24 : 419,200.62 = 139,304.68 : x
  2. Step 2: Convert to fraction form
    279,739.24/419,200.62 = 139,304.68/x
  3. Step 3: Cross multiply
    279,739.24x = 419,200.62 × 139,304.68
  4. Step 4: Simplify right side
    279,739.24x = 58,396,608,224.90
  5. Step 5: Solve for x
    x = 58,396,608,224.90/279,739.24
  6. Step 6: Final answer
    x = 208,753.72

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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.