Home / 221,478.96-305,629.56-125,983.56

Finding the Fourth Proportional to 221,478.96, 305,629.56 and 125,983.56

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Solution

The fourth proportional to 221,478.96, 305,629.56 and 125,983.56 is: 173,850.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,478.96 : 305,629.56 = 125,983.56 : x
  2. Step 2: Convert to fraction form
    221,478.96/305,629.56 = 125,983.56/x
  3. Step 3: Cross multiply
    221,478.96x = 305,629.56 × 125,983.56
  4. Step 4: Simplify right side
    221,478.96x = 38,504,300,010.03
  5. Step 5: Solve for x
    x = 38,504,300,010.03/221,478.96
  6. Step 6: Final answer
    x = 173,850.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.