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Finding the Fourth Proportional to 274,857.39, 379,295.30 and 160,161.39

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Solution

The fourth proportional to 274,857.39, 379,295.30 and 160,161.39 is: 221,018.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,857.39 : 379,295.30 = 160,161.39 : x
  2. Step 2: Convert to fraction form
    274,857.39/379,295.30 = 160,161.39/x
  3. Step 3: Cross multiply
    274,857.39x = 379,295.30 × 160,161.39
  4. Step 4: Simplify right side
    274,857.39x = 60,748,461,667.66
  5. Step 5: Solve for x
    x = 60,748,461,667.66/274,857.39
  6. Step 6: Final answer
    x = 221,018.11

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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.