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Finding the Fourth Proportional to 639,196.38, 959,222.25 and 265,219.38

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Solution

The fourth proportional to 639,196.38, 959,222.25 and 265,219.38 is: 398,006.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,196.38 : 959,222.25 = 265,219.38 : x
  2. Step 2: Convert to fraction form
    639,196.38/959,222.25 = 265,219.38/x
  3. Step 3: Cross multiply
    639,196.38x = 959,222.25 × 265,219.38
  4. Step 4: Simplify right side
    639,196.38x = 254,404,330,427.21
  5. Step 5: Solve for x
    x = 254,404,330,427.21/639,196.38
  6. Step 6: Final answer
    x = 398,006.53

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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.