Home / 813,183.48-1,219,835.12-214,140.48

Finding the Fourth Proportional to 813,183.48, 1,219,835.12 and 214,140.48

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Solution

The fourth proportional to 813,183.48, 1,219,835.12 and 214,140.48 is: 321,226.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,183.48 : 1,219,835.12 = 214,140.48 : x
  2. Step 2: Convert to fraction form
    813,183.48/1,219,835.12 = 214,140.48/x
  3. Step 3: Cross multiply
    813,183.48x = 1,219,835.12 × 214,140.48
  4. Step 4: Simplify right side
    813,183.48x = 261,216,078,117.66
  5. Step 5: Solve for x
    x = 261,216,078,117.66/813,183.48
  6. Step 6: Final answer
    x = 321,226.49

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Double scale
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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.