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Finding the Fourth Proportional to 321,197.61, 481,759.12 and 84,558.73

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Solution

The fourth proportional to 321,197.61, 481,759.12 and 84,558.73 is: 126,828.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,197.61 : 481,759.12 = 84,558.73 : x
  2. Step 2: Convert to fraction form
    321,197.61/481,759.12 = 84,558.73/x
  3. Step 3: Cross multiply
    321,197.61x = 481,759.12 × 84,558.73
  4. Step 4: Simplify right side
    321,197.61x = 40,736,939,353.12
  5. Step 5: Solve for x
    x = 40,736,939,353.12/321,197.61
  6. Step 6: Final answer
    x = 126,828.28

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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.