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Finding the Fourth Proportional to 328,189.39, 492,367.17 and 91,532.08

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Solution

The fourth proportional to 328,189.39, 492,367.17 and 91,532.08 is: 137,321.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,189.39 : 492,367.17 = 91,532.08 : x
  2. Step 2: Convert to fraction form
    328,189.39/492,367.17 = 91,532.08/x
  3. Step 3: Cross multiply
    328,189.39x = 492,367.17 × 91,532.08
  4. Step 4: Simplify right side
    328,189.39x = 45,067,388,274.32
  5. Step 5: Solve for x
    x = 45,067,388,274.32/328,189.39
  6. Step 6: Final answer
    x = 137,321.28

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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.