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Finding the Fourth Proportional to 207,659.52, 311,489.28 and 67,432.32

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Solution

The fourth proportional to 207,659.52, 311,489.28 and 67,432.32 is: 101,148.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,659.52 : 311,489.28 = 67,432.32 : x
  2. Step 2: Convert to fraction form
    207,659.52/311,489.28 = 67,432.32/x
  3. Step 3: Cross multiply
    207,659.52x = 311,489.28 × 67,432.32
  4. Step 4: Simplify right side
    207,659.52x = 21,004,444,805.53
  5. Step 5: Solve for x
    x = 21,004,444,805.53/207,659.52
  6. Step 6: Final answer
    x = 101,148.48

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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.