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Finding the Fourth Proportional to 279,410.87, 419,178.79 and 101,917.88

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Solution

The fourth proportional to 279,410.87, 419,178.79 and 101,917.88 is: 152,899.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,410.87 : 419,178.79 = 101,917.88 : x
  2. Step 2: Convert to fraction form
    279,410.87/419,178.79 = 101,917.88/x
  3. Step 3: Cross multiply
    279,410.87x = 419,178.79 × 101,917.88
  4. Step 4: Simplify right side
    279,410.87x = 42,721,814,793.11
  5. Step 5: Solve for x
    x = 42,721,814,793.11/279,410.87
  6. Step 6: Final answer
    x = 152,899.62

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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.