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Finding the Fourth Proportional to 274,818, 379,139.64 and 171,391.34

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Solution

The fourth proportional to 274,818, 379,139.64 and 171,391.34 is: 236,451.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,818 : 379,139.64 = 171,391.34 : x
  2. Step 2: Convert to fraction form
    274,818/379,139.64 = 171,391.34/x
  3. Step 3: Cross multiply
    274,818x = 379,139.64 × 171,391.34
  4. Step 4: Simplify right side
    274,818x = 64,981,250,946.72
  5. Step 5: Solve for x
    x = 64,981,250,946.72/274,818
  6. Step 6: Final answer
    x = 236,451.95

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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.