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Finding the Fourth Proportional to 643,375.09, 965,066.28 and 170,055.44

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Solution

The fourth proportional to 643,375.09, 965,066.28 and 170,055.44 is: 255,084.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,375.09 : 965,066.28 = 170,055.44 : x
  2. Step 2: Convert to fraction form
    643,375.09/965,066.28 = 170,055.44/x
  3. Step 3: Cross multiply
    643,375.09x = 965,066.28 × 170,055.44
  4. Step 4: Simplify right side
    643,375.09x = 164,114,770,874.56
  5. Step 5: Solve for x
    x = 164,114,770,874.56/643,375.09
  6. Step 6: Final answer
    x = 255,084.12

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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.