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Finding the Fourth Proportional to 207,049.72, 310,365.33 and 80,611.15

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Solution

The fourth proportional to 207,049.72, 310,365.33 and 80,611.15 is: 120,835.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,049.72 : 310,365.33 = 80,611.15 : x
  2. Step 2: Convert to fraction form
    207,049.72/310,365.33 = 80,611.15/x
  3. Step 3: Cross multiply
    207,049.72x = 310,365.33 × 80,611.15
  4. Step 4: Simplify right side
    207,049.72x = 25,018,906,171.43
  5. Step 5: Solve for x
    x = 25,018,906,171.43/207,049.72
  6. Step 6: Final answer
    x = 120,835.26

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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.