Home / 220,877.40-331,316.10-80,640.60

Finding the Fourth Proportional to 220,877.40, 331,316.10 and 80,640.60

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Solution

The fourth proportional to 220,877.40, 331,316.10 and 80,640.60 is: 120,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,877.40 : 331,316.10 = 80,640.60 : x
  2. Step 2: Convert to fraction form
    220,877.40/331,316.10 = 80,640.60/x
  3. Step 3: Cross multiply
    220,877.40x = 331,316.10 × 80,640.60
  4. Step 4: Simplify right side
    220,877.40x = 26,717,529,093.66
  5. Step 5: Solve for x
    x = 26,717,529,093.66/220,877.40
  6. Step 6: Final answer
    x = 120,960.90

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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.