Home / 445,536.20-668,379.18-220,907.72

Finding the Fourth Proportional to 445,536.20, 668,379.18 and 220,907.72

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Solution

The fourth proportional to 445,536.20, 668,379.18 and 220,907.72 is: 331,398.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,536.20 : 668,379.18 = 220,907.72 : x
  2. Step 2: Convert to fraction form
    445,536.20/668,379.18 = 220,907.72/x
  3. Step 3: Cross multiply
    445,536.20x = 668,379.18 × 220,907.72
  4. Step 4: Simplify right side
    445,536.20x = 147,650,120,749.27
  5. Step 5: Solve for x
    x = 147,650,120,749.27/445,536.20
  6. Step 6: Final answer
    x = 331,398.71

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1.5x scale

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.