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Finding the Fourth Proportional to 352,674.56, 486,735.44 and 218,558.72

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Solution

The fourth proportional to 352,674.56, 486,735.44 and 218,558.72 is: 301,638.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,674.56 : 486,735.44 = 218,558.72 : x
  2. Step 2: Convert to fraction form
    352,674.56/486,735.44 = 218,558.72/x
  3. Step 3: Cross multiply
    352,674.56x = 486,735.44 × 218,558.72
  4. Step 4: Simplify right side
    352,674.56x = 106,380,274,745.04
  5. Step 5: Solve for x
    x = 106,380,274,745.04/352,674.56
  6. Step 6: Final answer
    x = 301,638.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.