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Finding the Fourth Proportional to 274,893.76, 379,128.45 and 193,491.48

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Solution

The fourth proportional to 274,893.76, 379,128.45 and 193,491.48 is: 266,859.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,893.76 : 379,128.45 = 193,491.48 : x
  2. Step 2: Convert to fraction form
    274,893.76/379,128.45 = 193,491.48/x
  3. Step 3: Cross multiply
    274,893.76x = 379,128.45 × 193,491.48
  4. Step 4: Simplify right side
    274,893.76x = 73,358,124,900.61
  5. Step 5: Solve for x
    x = 73,358,124,900.61/274,893.76
  6. Step 6: Final answer
    x = 266,859.91

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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.