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Finding the Fourth Proportional to 203,245.44, 280,488.72 and 122,671.68

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Solution

The fourth proportional to 203,245.44, 280,488.72 and 122,671.68 is: 169,292.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,245.44 : 280,488.72 = 122,671.68 : x
  2. Step 2: Convert to fraction form
    203,245.44/280,488.72 = 122,671.68/x
  3. Step 3: Cross multiply
    203,245.44x = 280,488.72 × 122,671.68
  4. Step 4: Simplify right side
    203,245.44x = 34,408,022,503.45
  5. Step 5: Solve for x
    x = 34,408,022,503.45/203,245.44
  6. Step 6: Final answer
    x = 169,292.96

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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.