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Finding the Fourth Proportional to 213,791.67, 320,737.38 and 61,991.92

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Solution

The fourth proportional to 213,791.67, 320,737.38 and 61,991.92 is: 93,002.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,791.67 : 320,737.38 = 61,991.92 : x
  2. Step 2: Convert to fraction form
    213,791.67/320,737.38 = 61,991.92/x
  3. Step 3: Cross multiply
    213,791.67x = 320,737.38 × 61,991.92
  4. Step 4: Simplify right side
    213,791.67x = 19,883,126,001.97
  5. Step 5: Solve for x
    x = 19,883,126,001.97/213,791.67
  6. Step 6: Final answer
    x = 93,002.34

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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.