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Finding the Fourth Proportional to 274,490.41, 378,710.42 and 153,612.49

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Solution

The fourth proportional to 274,490.41, 378,710.42 and 153,612.49 is: 211,936.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,490.41 : 378,710.42 = 153,612.49 : x
  2. Step 2: Convert to fraction form
    274,490.41/378,710.42 = 153,612.49/x
  3. Step 3: Cross multiply
    274,490.41x = 378,710.42 × 153,612.49
  4. Step 4: Simplify right side
    274,490.41x = 58,174,648,890.31
  5. Step 5: Solve for x
    x = 58,174,648,890.31/274,490.41
  6. Step 6: Final answer
    x = 211,936.91

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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.