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Finding the Fourth Proportional to 279,801.72, 419,611.86 and 92,763

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Solution

The fourth proportional to 279,801.72, 419,611.86 and 92,763 is: 139,114.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,801.72 : 419,611.86 = 92,763 : x
  2. Step 2: Convert to fraction form
    279,801.72/419,611.86 = 92,763/x
  3. Step 3: Cross multiply
    279,801.72x = 419,611.86 × 92,763
  4. Step 4: Simplify right side
    279,801.72x = 38,924,454,969.18
  5. Step 5: Solve for x
    x = 38,924,454,969.18/279,801.72
  6. Step 6: Final answer
    x = 139,114.42

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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.