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Finding the Fourth Proportional to 207,812.52, 311,607 and 107,724.60

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Solution

The fourth proportional to 207,812.52, 311,607 and 107,724.60 is: 161,528.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,812.52 : 311,607 = 107,724.60 : x
  2. Step 2: Convert to fraction form
    207,812.52/311,607 = 107,724.60/x
  3. Step 3: Cross multiply
    207,812.52x = 311,607 × 107,724.60
  4. Step 4: Simplify right side
    207,812.52x = 33,567,739,432.20
  5. Step 5: Solve for x
    x = 33,567,739,432.20/207,812.52
  6. Step 6: Final answer
    x = 161,528.96

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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.