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Finding the Fourth Proportional to 376,920.78, 520,181.55 and 226,014.54

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Solution

The fourth proportional to 376,920.78, 520,181.55 and 226,014.54 is: 311,918.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,920.78 : 520,181.55 = 226,014.54 : x
  2. Step 2: Convert to fraction form
    376,920.78/520,181.55 = 226,014.54/x
  3. Step 3: Cross multiply
    376,920.78x = 520,181.55 × 226,014.54
  4. Step 4: Simplify right side
    376,920.78x = 117,568,593,739.74
  5. Step 5: Solve for x
    x = 117,568,593,739.74/376,920.78
  6. Step 6: Final answer
    x = 311,918.58

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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.