Home / 220,911.36-331,234.20-99,309.60

Finding the Fourth Proportional to 220,911.36, 331,234.20 and 99,309.60

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Solution

The fourth proportional to 220,911.36, 331,234.20 and 99,309.60 is: 148,904.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,911.36 : 331,234.20 = 99,309.60 : x
  2. Step 2: Convert to fraction form
    220,911.36/331,234.20 = 99,309.60/x
  3. Step 3: Cross multiply
    220,911.36x = 331,234.20 × 99,309.60
  4. Step 4: Simplify right side
    220,911.36x = 32,894,735,908.32
  5. Step 5: Solve for x
    x = 32,894,735,908.32/220,911.36
  6. Step 6: Final answer
    x = 148,904.68

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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.