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Finding the Fourth Proportional to 323,421.80, 485,132.70 and 181,704.20

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Solution

The fourth proportional to 323,421.80, 485,132.70 and 181,704.20 is: 272,556.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,421.80 : 485,132.70 = 181,704.20 : x
  2. Step 2: Convert to fraction form
    323,421.80/485,132.70 = 181,704.20/x
  3. Step 3: Cross multiply
    323,421.80x = 485,132.70 × 181,704.20
  4. Step 4: Simplify right side
    323,421.80x = 88,150,649,147.34
  5. Step 5: Solve for x
    x = 88,150,649,147.34/323,421.80
  6. Step 6: Final answer
    x = 272,556.30

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1.5x scale

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.