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Finding the Fourth Proportional to 216,832.80, 324,817.20 and 190,855.20

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Solution

The fourth proportional to 216,832.80, 324,817.20 and 190,855.20 is: 285,902.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,832.80 : 324,817.20 = 190,855.20 : x
  2. Step 2: Convert to fraction form
    216,832.80/324,817.20 = 190,855.20/x
  3. Step 3: Cross multiply
    216,832.80x = 324,817.20 × 190,855.20
  4. Step 4: Simplify right side
    216,832.80x = 61,993,051,669.44
  5. Step 5: Solve for x
    x = 61,993,051,669.44/216,832.80
  6. Step 6: Final answer
    x = 285,902.56

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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.