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Finding the Fourth Proportional to 222,731.80, 334,138.20 and 72,930.40

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Solution

The fourth proportional to 222,731.80, 334,138.20 and 72,930.40 is: 109,408.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,731.80 : 334,138.20 = 72,930.40 : x
  2. Step 2: Convert to fraction form
    222,731.80/334,138.20 = 72,930.40/x
  3. Step 3: Cross multiply
    222,731.80x = 334,138.20 × 72,930.40
  4. Step 4: Simplify right side
    222,731.80x = 24,368,832,581.28
  5. Step 5: Solve for x
    x = 24,368,832,581.28/222,731.80
  6. Step 6: Final answer
    x = 109,408.86

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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.