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Finding the Fourth Proportional to 356,217.30, 491,635.44 and 203,255.28

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Solution

The fourth proportional to 356,217.30, 491,635.44 and 203,255.28 is: 280,523.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,217.30 : 491,635.44 = 203,255.28 : x
  2. Step 2: Convert to fraction form
    356,217.30/491,635.44 = 203,255.28/x
  3. Step 3: Cross multiply
    356,217.30x = 491,635.44 × 203,255.28
  4. Step 4: Simplify right side
    356,217.30x = 99,927,499,015.12
  5. Step 5: Solve for x
    x = 99,927,499,015.12/356,217.30
  6. Step 6: Final answer
    x = 280,523.99

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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.