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Finding the Fourth Proportional to 321,119.22, 443,144.48 and 177,888.54

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Solution

The fourth proportional to 321,119.22, 443,144.48 and 177,888.54 is: 245,486.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,119.22 : 443,144.48 = 177,888.54 : x
  2. Step 2: Convert to fraction form
    321,119.22/443,144.48 = 177,888.54/x
  3. Step 3: Cross multiply
    321,119.22x = 443,144.48 × 177,888.54
  4. Step 4: Simplify right side
    321,119.22x = 78,830,324,556.26
  5. Step 5: Solve for x
    x = 78,830,324,556.26/321,119.22
  6. Step 6: Final answer
    x = 245,486.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.