Home / 455,120.82-682,655.67-139,576.86

Finding the Fourth Proportional to 455,120.82, 682,655.67 and 139,576.86

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Solution

The fourth proportional to 455,120.82, 682,655.67 and 139,576.86 is: 209,357.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,120.82 : 682,655.67 = 139,576.86 : x
  2. Step 2: Convert to fraction form
    455,120.82/682,655.67 = 139,576.86/x
  3. Step 3: Cross multiply
    455,120.82x = 682,655.67 × 139,576.86
  4. Step 4: Simplify right side
    455,120.82x = 95,282,934,879.80
  5. Step 5: Solve for x
    x = 95,282,934,879.80/455,120.82
  6. Step 6: Final answer
    x = 209,357.45

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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.