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Finding the Fourth Proportional to 388,620.30, 582,930.45 and 222,425.10

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Solution

The fourth proportional to 388,620.30, 582,930.45 and 222,425.10 is: 333,637.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,620.30 : 582,930.45 = 222,425.10 : x
  2. Step 2: Convert to fraction form
    388,620.30/582,930.45 = 222,425.10/x
  3. Step 3: Cross multiply
    388,620.30x = 582,930.45 × 222,425.10
  4. Step 4: Simplify right side
    388,620.30x = 129,658,363,634.30
  5. Step 5: Solve for x
    x = 129,658,363,634.30/388,620.30
  6. Step 6: Final answer
    x = 333,637.65

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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.