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Finding the Fourth Proportional to 400,405.50, 552,504.90 and 239,226.30

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Solution

The fourth proportional to 400,405.50, 552,504.90 and 239,226.30 is: 330,099.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,405.50 : 552,504.90 = 239,226.30 : x
  2. Step 2: Convert to fraction form
    400,405.50/552,504.90 = 239,226.30/x
  3. Step 3: Cross multiply
    400,405.50x = 552,504.90 × 239,226.30
  4. Step 4: Simplify right side
    400,405.50x = 132,173,702,958.87
  5. Step 5: Solve for x
    x = 132,173,702,958.87/400,405.50
  6. Step 6: Final answer
    x = 330,099.62

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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.