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Finding the Fourth Proportional to 279,699.92, 419,394.36 and 92,609.36

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Solution

The fourth proportional to 279,699.92, 419,394.36 and 92,609.36 is: 138,862.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,699.92 : 419,394.36 = 92,609.36 : x
  2. Step 2: Convert to fraction form
    279,699.92/419,394.36 = 92,609.36/x
  3. Step 3: Cross multiply
    279,699.92x = 419,394.36 × 92,609.36
  4. Step 4: Simplify right side
    279,699.92x = 38,839,843,267.21
  5. Step 5: Solve for x
    x = 38,839,843,267.21/279,699.92
  6. Step 6: Final answer
    x = 138,862.55

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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.