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Finding the Fourth Proportional to 274,569.45, 378,906.03 and 153,710.97

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Solution

The fourth proportional to 274,569.45, 378,906.03 and 153,710.97 is: 212,121.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,569.45 : 378,906.03 = 153,710.97 : x
  2. Step 2: Convert to fraction form
    274,569.45/378,906.03 = 153,710.97/x
  3. Step 3: Cross multiply
    274,569.45x = 378,906.03 × 153,710.97
  4. Step 4: Simplify right side
    274,569.45x = 58,242,013,410.15
  5. Step 5: Solve for x
    x = 58,242,013,410.15/274,569.45
  6. Step 6: Final answer
    x = 212,121.24

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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.