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Finding the Fourth Proportional to 493,138.12, 739,791.58 and 156,172.44

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Solution

The fourth proportional to 493,138.12, 739,791.58 and 156,172.44 is: 234,285.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,138.12 : 739,791.58 = 156,172.44 : x
  2. Step 2: Convert to fraction form
    493,138.12/739,791.58 = 156,172.44/x
  3. Step 3: Cross multiply
    493,138.12x = 739,791.58 × 156,172.44
  4. Step 4: Simplify right side
    493,138.12x = 115,535,056,140.06
  5. Step 5: Solve for x
    x = 115,535,056,140.06/493,138.12
  6. Step 6: Final answer
    x = 234,285.39

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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.