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Finding the Fourth Proportional to 389,229.78, 536,676.90 and 274,527.30

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Solution

The fourth proportional to 389,229.78, 536,676.90 and 274,527.30 is: 378,523.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,229.78 : 536,676.90 = 274,527.30 : x
  2. Step 2: Convert to fraction form
    389,229.78/536,676.90 = 274,527.30/x
  3. Step 3: Cross multiply
    389,229.78x = 536,676.90 × 274,527.30
  4. Step 4: Simplify right side
    389,229.78x = 147,332,460,329.37
  5. Step 5: Solve for x
    x = 147,332,460,329.37/389,229.78
  6. Step 6: Final answer
    x = 378,523.09

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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.