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Finding the Fourth Proportional to 274,261.48, 378,515.88 and 153,409.48

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Solution

The fourth proportional to 274,261.48, 378,515.88 and 153,409.48 is: 211,724.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,261.48 : 378,515.88 = 153,409.48 : x
  2. Step 2: Convert to fraction form
    274,261.48/378,515.88 = 153,409.48/x
  3. Step 3: Cross multiply
    274,261.48x = 378,515.88 × 153,409.48
  4. Step 4: Simplify right side
    274,261.48x = 58,067,924,322.54
  5. Step 5: Solve for x
    x = 58,067,924,322.54/274,261.48
  6. Step 6: Final answer
    x = 211,724.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.