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Finding the Fourth Proportional to 388,620.33, 582,951.41 and 122,401.68

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Solution

The fourth proportional to 388,620.33, 582,951.41 and 122,401.68 is: 183,609.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,620.33 : 582,951.41 = 122,401.68 : x
  2. Step 2: Convert to fraction form
    388,620.33/582,951.41 = 122,401.68/x
  3. Step 3: Cross multiply
    388,620.33x = 582,951.41 × 122,401.68
  4. Step 4: Simplify right side
    388,620.33x = 71,354,231,330.36
  5. Step 5: Solve for x
    x = 71,354,231,330.36/388,620.33
  6. Step 6: Final answer
    x = 183,609.11

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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.