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Finding the Fourth Proportional to 248,536.20, 372,866.40 and 80,072.40

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Solution

The fourth proportional to 248,536.20, 372,866.40 and 80,072.40 is: 120,128.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,536.20 : 372,866.40 = 80,072.40 : x
  2. Step 2: Convert to fraction form
    248,536.20/372,866.40 = 80,072.40/x
  3. Step 3: Cross multiply
    248,536.20x = 372,866.40 × 80,072.40
  4. Step 4: Simplify right side
    248,536.20x = 29,856,307,527.36
  5. Step 5: Solve for x
    x = 29,856,307,527.36/248,536.20
  6. Step 6: Final answer
    x = 120,128.61

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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.