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Finding the Fourth Proportional to 388,959.60, 582,661.80 and 222,553.20

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Solution

The fourth proportional to 388,959.60, 582,661.80 and 222,553.20 is: 333,384.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,959.60 : 582,661.80 = 222,553.20 : x
  2. Step 2: Convert to fraction form
    388,959.60/582,661.80 = 222,553.20/x
  3. Step 3: Cross multiply
    388,959.60x = 582,661.80 × 222,553.20
  4. Step 4: Simplify right side
    388,959.60x = 129,673,248,107.76
  5. Step 5: Solve for x
    x = 129,673,248,107.76/388,959.60
  6. Step 6: Final answer
    x = 333,384.88

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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.