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Finding the Fourth Proportional to 279,577.86, 419,380.58 and 79,927.44

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Solution

The fourth proportional to 279,577.86, 419,380.58 and 79,927.44 is: 119,895.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,577.86 : 419,380.58 = 79,927.44 : x
  2. Step 2: Convert to fraction form
    279,577.86/419,380.58 = 79,927.44/x
  3. Step 3: Cross multiply
    279,577.86x = 419,380.58 × 79,927.44
  4. Step 4: Simplify right side
    279,577.86x = 33,520,016,145.12
  5. Step 5: Solve for x
    x = 33,520,016,145.12/279,577.86
  6. Step 6: Final answer
    x = 119,895.10

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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.