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Finding the Fourth Proportional to 196,879.57, 295,363.09 and 72,220.57

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Solution

The fourth proportional to 196,879.57, 295,363.09 and 72,220.57 is: 108,346.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,879.57 : 295,363.09 = 72,220.57 : x
  2. Step 2: Convert to fraction form
    196,879.57/295,363.09 = 72,220.57/x
  3. Step 3: Cross multiply
    196,879.57x = 295,363.09 × 72,220.57
  4. Step 4: Simplify right side
    196,879.57x = 21,331,288,878.84
  5. Step 5: Solve for x
    x = 21,331,288,878.84/196,879.57
  6. Step 6: Final answer
    x = 108,346.89

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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.