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Finding the Fourth Proportional to 397,190.67, 547,596.50 and 328,956.27

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Solution

The fourth proportional to 397,190.67, 547,596.50 and 328,956.27 is: 453,523.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,190.67 : 547,596.50 = 328,956.27 : x
  2. Step 2: Convert to fraction form
    397,190.67/547,596.50 = 328,956.27/x
  3. Step 3: Cross multiply
    397,190.67x = 547,596.50 × 328,956.27
  4. Step 4: Simplify right side
    397,190.67x = 180,135,300,460.27
  5. Step 5: Solve for x
    x = 180,135,300,460.27/397,190.67
  6. Step 6: Final answer
    x = 453,523.49

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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.