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Finding the Fourth Proportional to 197,359.62, 295,994.78 and 90,640.98

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Solution

The fourth proportional to 197,359.62, 295,994.78 and 90,640.98 is: 135,940.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,359.62 : 295,994.78 = 90,640.98 : x
  2. Step 2: Convert to fraction form
    197,359.62/295,994.78 = 90,640.98/x
  3. Step 3: Cross multiply
    197,359.62x = 295,994.78 × 90,640.98
  4. Step 4: Simplify right side
    197,359.62x = 26,829,256,480.88
  5. Step 5: Solve for x
    x = 26,829,256,480.88/197,359.62
  6. Step 6: Final answer
    x = 135,940.96

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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.