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Finding the Fourth Proportional to 274,876.62, 379,303.80 and 188,911.13

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Solution

The fourth proportional to 274,876.62, 379,303.80 and 188,911.13 is: 260,679.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,876.62 : 379,303.80 = 188,911.13 : x
  2. Step 2: Convert to fraction form
    274,876.62/379,303.80 = 188,911.13/x
  3. Step 3: Cross multiply
    274,876.62x = 379,303.80 × 188,911.13
  4. Step 4: Simplify right side
    274,876.62x = 71,654,707,574.78
  5. Step 5: Solve for x
    x = 71,654,707,574.78/274,876.62
  6. Step 6: Final answer
    x = 260,679.53

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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.