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Finding the Fourth Proportional to 321,105.60, 481,512.60 and 121,359.60

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Solution

The fourth proportional to 321,105.60, 481,512.60 and 121,359.60 is: 181,984.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,105.60 : 481,512.60 = 121,359.60 : x
  2. Step 2: Convert to fraction form
    321,105.60/481,512.60 = 121,359.60/x
  3. Step 3: Cross multiply
    321,105.60x = 481,512.60 × 121,359.60
  4. Step 4: Simplify right side
    321,105.60x = 58,436,176,530.96
  5. Step 5: Solve for x
    x = 58,436,176,530.96/321,105.60
  6. Step 6: Final answer
    x = 181,984.30

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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.