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Finding the Fourth Proportional to 321,374.05, 481,866.67 and 143,847.97

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Solution

The fourth proportional to 321,374.05, 481,866.67 and 143,847.97 is: 215,684.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,374.05 : 481,866.67 = 143,847.97 : x
  2. Step 2: Convert to fraction form
    321,374.05/481,866.67 = 143,847.97/x
  3. Step 3: Cross multiply
    321,374.05x = 481,866.67 × 143,847.97
  4. Step 4: Simplify right side
    321,374.05x = 69,315,542,290.16
  5. Step 5: Solve for x
    x = 69,315,542,290.16/321,374.05
  6. Step 6: Final answer
    x = 215,684.94

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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.