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Finding the Fourth Proportional to 274,472.78, 378,772.38 and 153,614.06

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Solution

The fourth proportional to 274,472.78, 378,772.38 and 153,614.06 is: 211,987.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,472.78 : 378,772.38 = 153,614.06 : x
  2. Step 2: Convert to fraction form
    274,472.78/378,772.38 = 153,614.06/x
  3. Step 3: Cross multiply
    274,472.78x = 378,772.38 × 153,614.06
  4. Step 4: Simplify right side
    274,472.78x = 58,184,763,299.68
  5. Step 5: Solve for x
    x = 58,184,763,299.68/274,472.78
  6. Step 6: Final answer
    x = 211,987.37

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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.