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Finding the Fourth Proportional to 274,876.40, 379,321.80 and 161,706.80

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Solution

The fourth proportional to 274,876.40, 379,321.80 and 161,706.80 is: 223,150.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,876.40 : 379,321.80 = 161,706.80 : x
  2. Step 2: Convert to fraction form
    274,876.40/379,321.80 = 161,706.80/x
  3. Step 3: Cross multiply
    274,876.40x = 379,321.80 × 161,706.80
  4. Step 4: Simplify right side
    274,876.40x = 61,338,914,448.24
  5. Step 5: Solve for x
    x = 61,338,914,448.24/274,876.40
  6. Step 6: Final answer
    x = 223,150.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.