Home / 388,531.42-582,890.43-148,641.39

Finding the Fourth Proportional to 388,531.42, 582,890.43 and 148,641.39

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Solution

The fourth proportional to 388,531.42, 582,890.43 and 148,641.39 is: 222,997.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,531.42 : 582,890.43 = 148,641.39 : x
  2. Step 2: Convert to fraction form
    388,531.42/582,890.43 = 148,641.39/x
  3. Step 3: Cross multiply
    388,531.42x = 582,890.43 × 148,641.39
  4. Step 4: Simplify right side
    388,531.42x = 86,641,643,732.90
  5. Step 5: Solve for x
    x = 86,641,643,732.90/388,531.42
  6. Step 6: Final answer
    x = 222,997.78

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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.