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Finding the Fourth Proportional to 321,379.60, 481,723.80 and 121,622.80

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Solution

The fourth proportional to 321,379.60, 481,723.80 and 121,622.80 is: 182,303.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,379.60 : 481,723.80 = 121,622.80 : x
  2. Step 2: Convert to fraction form
    321,379.60/481,723.80 = 121,622.80/x
  3. Step 3: Cross multiply
    321,379.60x = 481,723.80 × 121,622.80
  4. Step 4: Simplify right side
    321,379.60x = 58,588,597,382.64
  5. Step 5: Solve for x
    x = 58,588,597,382.64/321,379.60
  6. Step 6: Final answer
    x = 182,303.41

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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.