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Finding the Fourth Proportional to 388,628.97, 582,943.46 and 151,805.57

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Solution

The fourth proportional to 388,628.97, 582,943.46 and 151,805.57 is: 227,708.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,628.97 : 582,943.46 = 151,805.57 : x
  2. Step 2: Convert to fraction form
    388,628.97/582,943.46 = 151,805.57/x
  3. Step 3: Cross multiply
    388,628.97x = 582,943.46 × 151,805.57
  4. Step 4: Simplify right side
    388,628.97x = 88,494,060,549.33
  5. Step 5: Solve for x
    x = 88,494,060,549.33/388,628.97
  6. Step 6: Final answer
    x = 227,708.35

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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.