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Finding the Fourth Proportional to 279,960.01, 419,936.37 and 69,599.77

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Solution

The fourth proportional to 279,960.01, 419,936.37 and 69,599.77 is: 104,398.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,960.01 : 419,936.37 = 69,599.77 : x
  2. Step 2: Convert to fraction form
    279,960.01/419,936.37 = 69,599.77/x
  3. Step 3: Cross multiply
    279,960.01x = 419,936.37 × 69,599.77
  4. Step 4: Simplify right side
    279,960.01x = 29,227,474,766.63
  5. Step 5: Solve for x
    x = 29,227,474,766.63/279,960.01
  6. Step 6: Final answer
    x = 104,398.75

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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.