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Finding the Fourth Proportional to 279,988.72, 419,892 and 92,950

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Solution

The fourth proportional to 279,988.72, 419,892 and 92,950 is: 139,394.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,988.72 : 419,892 = 92,950 : x
  2. Step 2: Convert to fraction form
    279,988.72/419,892 = 92,950/x
  3. Step 3: Cross multiply
    279,988.72x = 419,892 × 92,950
  4. Step 4: Simplify right side
    279,988.72x = 39,028,961,400
  5. Step 5: Solve for x
    x = 39,028,961,400/279,988.72
  6. Step 6: Final answer
    x = 139,394.76

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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.