Home / 321,945.20-482,982.60-111,539.60

Finding the Fourth Proportional to 321,945.20, 482,982.60 and 111,539.60

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Solution

The fourth proportional to 321,945.20, 482,982.60 and 111,539.60 is: 167,331.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,945.20 : 482,982.60 = 111,539.60 : x
  2. Step 2: Convert to fraction form
    321,945.20/482,982.60 = 111,539.60/x
  3. Step 3: Cross multiply
    321,945.20x = 482,982.60 × 111,539.60
  4. Step 4: Simplify right side
    321,945.20x = 53,871,686,010.96
  5. Step 5: Solve for x
    x = 53,871,686,010.96/321,945.20
  6. Step 6: Final answer
    x = 167,331.85

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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.