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Finding the Fourth Proportional to 387,662.64, 534,896.03 and 226,486.56

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Solution

The fourth proportional to 387,662.64, 534,896.03 and 226,486.56 is: 312,505.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,662.64 : 534,896.03 = 226,486.56 : x
  2. Step 2: Convert to fraction form
    387,662.64/534,896.03 = 226,486.56/x
  3. Step 3: Cross multiply
    387,662.64x = 534,896.03 × 226,486.56
  4. Step 4: Simplify right side
    387,662.64x = 121,146,760,659.92
  5. Step 5: Solve for x
    x = 121,146,760,659.92/387,662.64
  6. Step 6: Final answer
    x = 312,505.64

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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.