Home / 813,186.50-1,219,839.60-214,143.44

Finding the Fourth Proportional to 813,186.50, 1,219,839.60 and 214,143.44

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Solution

The fourth proportional to 813,186.50, 1,219,839.60 and 214,143.44 is: 321,230.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,186.50 : 1,219,839.60 = 214,143.44 : x
  2. Step 2: Convert to fraction form
    813,186.50/1,219,839.60 = 214,143.44/x
  3. Step 3: Cross multiply
    813,186.50x = 1,219,839.60 × 214,143.44
  4. Step 4: Simplify right side
    813,186.50x = 261,220,642,093.03
  5. Step 5: Solve for x
    x = 261,220,642,093.03/813,186.50
  6. Step 6: Final answer
    x = 321,230.92

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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.