Home / 217,949.96-300,771.20-122,456.60

Finding the Fourth Proportional to 217,949.96, 300,771.20 and 122,456.60

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Solution

The fourth proportional to 217,949.96, 300,771.20 and 122,456.60 is: 168,990.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,949.96 : 300,771.20 = 122,456.60 : x
  2. Step 2: Convert to fraction form
    217,949.96/300,771.20 = 122,456.60/x
  3. Step 3: Cross multiply
    217,949.96x = 300,771.20 × 122,456.60
  4. Step 4: Simplify right side
    217,949.96x = 36,831,418,529.92
  5. Step 5: Solve for x
    x = 36,831,418,529.92/217,949.96
  6. Step 6: Final answer
    x = 168,990.25

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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.