Home / 381,319.20-572,027.40-144,729.54

Finding the Fourth Proportional to 381,319.20, 572,027.40 and 144,729.54

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Solution

The fourth proportional to 381,319.20, 572,027.40 and 144,729.54 is: 217,112.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,319.20 : 572,027.40 = 144,729.54 : x
  2. Step 2: Convert to fraction form
    381,319.20/572,027.40 = 144,729.54/x
  3. Step 3: Cross multiply
    381,319.20x = 572,027.40 × 144,729.54
  4. Step 4: Simplify right side
    381,319.20x = 82,789,262,469.40
  5. Step 5: Solve for x
    x = 82,789,262,469.40/381,319.20
  6. Step 6: Final answer
    x = 217,112.76

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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.