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Finding the Fourth Proportional to 321,034.20, 481,608.90 and 134,064.60

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Solution

The fourth proportional to 321,034.20, 481,608.90 and 134,064.60 is: 201,120.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,034.20 : 481,608.90 = 134,064.60 : x
  2. Step 2: Convert to fraction form
    321,034.20/481,608.90 = 134,064.60/x
  3. Step 3: Cross multiply
    321,034.20x = 481,608.90 × 134,064.60
  4. Step 4: Simplify right side
    321,034.20x = 64,566,704,534.94
  5. Step 5: Solve for x
    x = 64,566,704,534.94/321,034.20
  6. Step 6: Final answer
    x = 201,120.95

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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.