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Finding the Fourth Proportional to 279,474.70, 419,277.12 and 79,797.82

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Solution

The fourth proportional to 279,474.70, 419,277.12 and 79,797.82 is: 119,715.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,474.70 : 419,277.12 = 79,797.82 : x
  2. Step 2: Convert to fraction form
    279,474.70/419,277.12 = 79,797.82/x
  3. Step 3: Cross multiply
    279,474.70x = 419,277.12 × 79,797.82
  4. Step 4: Simplify right side
    279,474.70x = 33,457,400,151.88
  5. Step 5: Solve for x
    x = 33,457,400,151.88/279,474.70
  6. Step 6: Final answer
    x = 119,715.31

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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.