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Finding the Fourth Proportional to 339,158.68, 508,738.03 and 128,796.62

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Solution

The fourth proportional to 339,158.68, 508,738.03 and 128,796.62 is: 193,194.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,158.68 : 508,738.03 = 128,796.62 : x
  2. Step 2: Convert to fraction form
    339,158.68/508,738.03 = 128,796.62/x
  3. Step 3: Cross multiply
    339,158.68x = 508,738.03 × 128,796.62
  4. Step 4: Simplify right side
    339,158.68x = 65,523,735,863.78
  5. Step 5: Solve for x
    x = 65,523,735,863.78/339,158.68
  6. Step 6: Final answer
    x = 193,194.93

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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.