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Finding the Fourth Proportional to 220,774.96, 331,128.96 and 80,533.72

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Solution

The fourth proportional to 220,774.96, 331,128.96 and 80,533.72 is: 120,788.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,774.96 : 331,128.96 = 80,533.72 : x
  2. Step 2: Convert to fraction form
    220,774.96/331,128.96 = 80,533.72/x
  3. Step 3: Cross multiply
    220,774.96x = 331,128.96 × 80,533.72
  4. Step 4: Simplify right side
    220,774.96x = 26,667,046,948.53
  5. Step 5: Solve for x
    x = 26,667,046,948.53/220,774.96
  6. Step 6: Final answer
    x = 120,788.37

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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.