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Finding the Fourth Proportional to 274,473.32, 378,727.44 and 161,317.88

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Solution

The fourth proportional to 274,473.32, 378,727.44 and 161,317.88 is: 222,591.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,473.32 : 378,727.44 = 161,317.88 : x
  2. Step 2: Convert to fraction form
    274,473.32/378,727.44 = 161,317.88/x
  3. Step 3: Cross multiply
    274,473.32x = 378,727.44 × 161,317.88
  4. Step 4: Simplify right side
    274,473.32x = 61,095,507,718.63
  5. Step 5: Solve for x
    x = 61,095,507,718.63/274,473.32
  6. Step 6: Final answer
    x = 222,591.79

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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.