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Finding the Fourth Proportional to 356,388.56, 491,803.32 and 203,434.64

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Solution

The fourth proportional to 356,388.56, 491,803.32 and 203,434.64 is: 280,732.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,388.56 : 491,803.32 = 203,434.64 : x
  2. Step 2: Convert to fraction form
    356,388.56/491,803.32 = 203,434.64/x
  3. Step 3: Cross multiply
    356,388.56x = 491,803.32 × 203,434.64
  4. Step 4: Simplify right side
    356,388.56x = 100,049,831,355.01
  5. Step 5: Solve for x
    x = 100,049,831,355.01/356,388.56
  6. Step 6: Final answer
    x = 280,732.44

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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.