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Finding the Fourth Proportional to 388,642.54, 582,908.46 and 122,396.14

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Solution

The fourth proportional to 388,642.54, 582,908.46 and 122,396.14 is: 183,576.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,642.54 : 582,908.46 = 122,396.14 : x
  2. Step 2: Convert to fraction form
    388,642.54/582,908.46 = 122,396.14/x
  3. Step 3: Cross multiply
    388,642.54x = 582,908.46 × 122,396.14
  4. Step 4: Simplify right side
    388,642.54x = 71,345,744,193.62
  5. Step 5: Solve for x
    x = 71,345,744,193.62/388,642.54
  6. Step 6: Final answer
    x = 183,576.77

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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.