Home / 215,580.62-323,355.87-80,619.02

Finding the Fourth Proportional to 215,580.62, 323,355.87 and 80,619.02

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Solution

The fourth proportional to 215,580.62, 323,355.87 and 80,619.02 is: 120,922.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,580.62 : 323,355.87 = 80,619.02 : x
  2. Step 2: Convert to fraction form
    215,580.62/323,355.87 = 80,619.02/x
  3. Step 3: Cross multiply
    215,580.62x = 323,355.87 × 80,619.02
  4. Step 4: Simplify right side
    215,580.62x = 26,068,631,733.87
  5. Step 5: Solve for x
    x = 26,068,631,733.87/215,580.62
  6. Step 6: Final answer
    x = 120,922.89

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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.