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Finding the Fourth Proportional to 268,945.68, 403,301.88 and 91,405.02

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Solution

The fourth proportional to 268,945.68, 403,301.88 and 91,405.02 is: 137,067.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,945.68 : 403,301.88 = 91,405.02 : x
  2. Step 2: Convert to fraction form
    268,945.68/403,301.88 = 91,405.02/x
  3. Step 3: Cross multiply
    268,945.68x = 403,301.88 × 91,405.02
  4. Step 4: Simplify right side
    268,945.68x = 36,863,816,407.44
  5. Step 5: Solve for x
    x = 36,863,816,407.44/268,945.68
  6. Step 6: Final answer
    x = 137,067.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.