Home / 455,276.20-682,914.30-218,561.80

Finding the Fourth Proportional to 455,276.20, 682,914.30 and 218,561.80

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Solution

The fourth proportional to 455,276.20, 682,914.30 and 218,561.80 is: 327,842.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,276.20 : 682,914.30 = 218,561.80 : x
  2. Step 2: Convert to fraction form
    455,276.20/682,914.30 = 218,561.80/x
  3. Step 3: Cross multiply
    455,276.20x = 682,914.30 × 218,561.80
  4. Step 4: Simplify right side
    455,276.20x = 149,258,978,653.74
  5. Step 5: Solve for x
    x = 149,258,978,653.74/455,276.20
  6. Step 6: Final answer
    x = 327,842.70

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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.