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Finding the Fourth Proportional to 248,556.80, 372,806.40 and 71,091.20

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Solution

The fourth proportional to 248,556.80, 372,806.40 and 71,091.20 is: 106,628.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,556.80 : 372,806.40 = 71,091.20 : x
  2. Step 2: Convert to fraction form
    248,556.80/372,806.40 = 71,091.20/x
  3. Step 3: Cross multiply
    248,556.80x = 372,806.40 × 71,091.20
  4. Step 4: Simplify right side
    248,556.80x = 26,503,254,343.68
  5. Step 5: Solve for x
    x = 26,503,254,343.68/248,556.80
  6. Step 6: Final answer
    x = 106,628.56

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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.