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Finding the Fourth Proportional to 397,318.40, 595,977.60 and 220,171.40

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Solution

The fourth proportional to 397,318.40, 595,977.60 and 220,171.40 is: 330,257.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,318.40 : 595,977.60 = 220,171.40 : x
  2. Step 2: Convert to fraction form
    397,318.40/595,977.60 = 220,171.40/x
  3. Step 3: Cross multiply
    397,318.40x = 595,977.60 × 220,171.40
  4. Step 4: Simplify right side
    397,318.40x = 131,217,222,560.64
  5. Step 5: Solve for x
    x = 131,217,222,560.64/397,318.40
  6. Step 6: Final answer
    x = 330,257.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.