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Finding the Fourth Proportional to 274,838.52, 379,251.66 and 155,606.52

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Solution

The fourth proportional to 274,838.52, 379,251.66 and 155,606.52 is: 214,722.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,838.52 : 379,251.66 = 155,606.52 : x
  2. Step 2: Convert to fraction form
    274,838.52/379,251.66 = 155,606.52/x
  3. Step 3: Cross multiply
    274,838.52x = 379,251.66 × 155,606.52
  4. Step 4: Simplify right side
    274,838.52x = 59,014,031,016.82
  5. Step 5: Solve for x
    x = 59,014,031,016.82/274,838.52
  6. Step 6: Final answer
    x = 214,722.56

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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.