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Finding the Fourth Proportional to 248,536.70, 372,867.15 and 80,072.90

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Solution

The fourth proportional to 248,536.70, 372,867.15 and 80,072.90 is: 120,129.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,536.70 : 372,867.15 = 80,072.90 : x
  2. Step 2: Convert to fraction form
    248,536.70/372,867.15 = 80,072.90/x
  3. Step 3: Cross multiply
    248,536.70x = 372,867.15 × 80,072.90
  4. Step 4: Simplify right side
    248,536.70x = 29,856,554,015.24
  5. Step 5: Solve for x
    x = 29,856,554,015.24/248,536.70
  6. Step 6: Final answer
    x = 120,129.36

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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.