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Finding the Fourth Proportional to 388,331.34, 582,563.43 and 177,987.30

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Solution

The fourth proportional to 388,331.34, 582,563.43 and 177,987.30 is: 267,011.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,331.34 : 582,563.43 = 177,987.30 : x
  2. Step 2: Convert to fraction form
    388,331.34/582,563.43 = 177,987.30/x
  3. Step 3: Cross multiply
    388,331.34x = 582,563.43 × 177,987.30
  4. Step 4: Simplify right side
    388,331.34x = 103,688,891,984.44
  5. Step 5: Solve for x
    x = 103,688,891,984.44/388,331.34
  6. Step 6: Final answer
    x = 267,011.39

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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.