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Finding the Fourth Proportional to 279,367.92, 419,051.88 and 69,009.84

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Solution

The fourth proportional to 279,367.92, 419,051.88 and 69,009.84 is: 103,514.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,367.92 : 419,051.88 = 69,009.84 : x
  2. Step 2: Convert to fraction form
    279,367.92/419,051.88 = 69,009.84/x
  3. Step 3: Cross multiply
    279,367.92x = 419,051.88 × 69,009.84
  4. Step 4: Simplify right side
    279,367.92x = 28,918,703,190.50
  5. Step 5: Solve for x
    x = 28,918,703,190.50/279,367.92
  6. Step 6: Final answer
    x = 103,514.76

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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.