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Finding the Fourth Proportional to 401,451.64, 554,027.76 and 231,696.68

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Solution

The fourth proportional to 401,451.64, 554,027.76 and 231,696.68 is: 319,755.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,451.64 : 554,027.76 = 231,696.68 : x
  2. Step 2: Convert to fraction form
    401,451.64/554,027.76 = 231,696.68/x
  3. Step 3: Cross multiply
    401,451.64x = 554,027.76 × 231,696.68
  4. Step 4: Simplify right side
    401,451.64x = 128,366,392,619.84
  5. Step 5: Solve for x
    x = 128,366,392,619.84/401,451.64
  6. Step 6: Final answer
    x = 319,755.56

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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.