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Finding the Fourth Proportional to 279,163.40, 418,745.10 and 110,723.90

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Solution

The fourth proportional to 279,163.40, 418,745.10 and 110,723.90 is: 166,085.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,163.40 : 418,745.10 = 110,723.90 : x
  2. Step 2: Convert to fraction form
    279,163.40/418,745.10 = 110,723.90/x
  3. Step 3: Cross multiply
    279,163.40x = 418,745.10 × 110,723.90
  4. Step 4: Simplify right side
    279,163.40x = 46,365,090,577.89
  5. Step 5: Solve for x
    x = 46,365,090,577.89/279,163.40
  6. Step 6: Final answer
    x = 166,085.85

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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.