Home / 220,981.40-331,472.10-80,840.60

Finding the Fourth Proportional to 220,981.40, 331,472.10 and 80,840.60

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Solution

The fourth proportional to 220,981.40, 331,472.10 and 80,840.60 is: 121,260.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,981.40 : 331,472.10 = 80,840.60 : x
  2. Step 2: Convert to fraction form
    220,981.40/331,472.10 = 80,840.60/x
  3. Step 3: Cross multiply
    220,981.40x = 331,472.10 × 80,840.60
  4. Step 4: Simplify right side
    220,981.40x = 26,796,403,447.26
  5. Step 5: Solve for x
    x = 26,796,403,447.26/220,981.40
  6. Step 6: Final answer
    x = 121,260.90

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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.