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Finding the Fourth Proportional to 274,512.72, 379,063.97 and 172,707.87

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Solution

The fourth proportional to 274,512.72, 379,063.97 and 172,707.87 is: 238,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,512.72 : 379,063.97 = 172,707.87 : x
  2. Step 2: Convert to fraction form
    274,512.72/379,063.97 = 172,707.87/x
  3. Step 3: Cross multiply
    274,512.72x = 379,063.97 × 172,707.87
  4. Step 4: Simplify right side
    274,512.72x = 65,467,328,567.41
  5. Step 5: Solve for x
    x = 65,467,328,567.41/274,512.72
  6. Step 6: Final answer
    x = 238,485.60

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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.