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Finding the Fourth Proportional to 388,171.50, 582,257.52 and 107,689.02

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Solution

The fourth proportional to 388,171.50, 582,257.52 and 107,689.02 is: 161,533.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,171.50 : 582,257.52 = 107,689.02 : x
  2. Step 2: Convert to fraction form
    388,171.50/582,257.52 = 107,689.02/x
  3. Step 3: Cross multiply
    388,171.50x = 582,257.52 × 107,689.02
  4. Step 4: Simplify right side
    388,171.50x = 62,702,741,716.43
  5. Step 5: Solve for x
    x = 62,702,741,716.43/388,171.50
  6. Step 6: Final answer
    x = 161,533.60

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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.