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Finding the Fourth Proportional to 270,305, 405,063.83 and 129,899.60

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Solution

The fourth proportional to 270,305, 405,063.83 and 129,899.60 is: 194,660.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,305 : 405,063.83 = 129,899.60 : x
  2. Step 2: Convert to fraction form
    270,305/405,063.83 = 129,899.60/x
  3. Step 3: Cross multiply
    270,305x = 405,063.83 × 129,899.60
  4. Step 4: Simplify right side
    270,305x = 52,617,629,491.47
  5. Step 5: Solve for x
    x = 52,617,629,491.47/270,305
  6. Step 6: Final answer
    x = 194,660.22

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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.