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Finding the Fourth Proportional to 321,195.80, 481,793.70 and 308,948.60

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Solution

The fourth proportional to 321,195.80, 481,793.70 and 308,948.60 is: 463,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,195.80 : 481,793.70 = 308,948.60 : x
  2. Step 2: Convert to fraction form
    321,195.80/481,793.70 = 308,948.60/x
  3. Step 3: Cross multiply
    321,195.80x = 481,793.70 × 308,948.60
  4. Step 4: Simplify right side
    321,195.80x = 148,849,489,103.82
  5. Step 5: Solve for x
    x = 148,849,489,103.82/321,195.80
  6. Step 6: Final answer
    x = 463,422.90

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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.