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Finding the Fourth Proportional to 321,036.20, 481,611.90 and 134,066.60

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Solution

The fourth proportional to 321,036.20, 481,611.90 and 134,066.60 is: 201,123.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,036.20 : 481,611.90 = 134,066.60 : x
  2. Step 2: Convert to fraction form
    321,036.20/481,611.90 = 134,066.60/x
  3. Step 3: Cross multiply
    321,036.20x = 481,611.90 × 134,066.60
  4. Step 4: Simplify right side
    321,036.20x = 64,568,069,952.54
  5. Step 5: Solve for x
    x = 64,568,069,952.54/321,036.20
  6. Step 6: Final answer
    x = 201,123.95

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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.