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Finding the Fourth Proportional to 356,410.56, 491,452.55 and 227,144.45

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Solution

The fourth proportional to 356,410.56, 491,452.55 and 227,144.45 is: 313,208.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,410.56 : 491,452.55 = 227,144.45 : x
  2. Step 2: Convert to fraction form
    356,410.56/491,452.55 = 227,144.45/x
  3. Step 3: Cross multiply
    356,410.56x = 491,452.55 × 227,144.45
  4. Step 4: Simplify right side
    356,410.56x = 111,630,720,115.55
  5. Step 5: Solve for x
    x = 111,630,720,115.55/356,410.56
  6. Step 6: Final answer
    x = 313,208.23

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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.