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Finding the Fourth Proportional to 274,361.82, 378,634 and 153,495.92

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Solution

The fourth proportional to 274,361.82, 378,634 and 153,495.92 is: 211,832.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,361.82 : 378,634 = 153,495.92 : x
  2. Step 2: Convert to fraction form
    274,361.82/378,634 = 153,495.92/x
  3. Step 3: Cross multiply
    274,361.82x = 378,634 × 153,495.92
  4. Step 4: Simplify right side
    274,361.82x = 58,118,774,173.28
  5. Step 5: Solve for x
    x = 58,118,774,173.28/274,361.82
  6. Step 6: Final answer
    x = 211,832.59

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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.