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Finding the Fourth Proportional to 388,481.00, 582,720.68 and 122,264.78

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Solution

The fourth proportional to 388,481.00, 582,720.68 and 122,264.78 is: 183,396.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,481.00 : 582,720.68 = 122,264.78 : x
  2. Step 2: Convert to fraction form
    388,481.00/582,720.68 = 122,264.78/x
  3. Step 3: Cross multiply
    388,481.00x = 582,720.68 × 122,264.78
  4. Step 4: Simplify right side
    388,481.00x = 71,246,213,133.71
  5. Step 5: Solve for x
    x = 71,246,213,133.71/388,481.00
  6. Step 6: Final answer
    x = 183,396.91

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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.