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Finding the Fourth Proportional to 203,311.88, 280,577.64 and 122,723.66

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Solution

The fourth proportional to 203,311.88, 280,577.64 and 122,723.66 is: 169,363.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,311.88 : 280,577.64 = 122,723.66 : x
  2. Step 2: Convert to fraction form
    203,311.88/280,577.64 = 122,723.66/x
  3. Step 3: Cross multiply
    203,311.88x = 280,577.64 × 122,723.66
  4. Step 4: Simplify right side
    203,311.88x = 34,433,515,366.30
  5. Step 5: Solve for x
    x = 34,433,515,366.30/203,311.88
  6. Step 6: Final answer
    x = 169,363.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.