Home / 455,166.20-682,781.70-139,622.60

Finding the Fourth Proportional to 455,166.20, 682,781.70 and 139,622.60

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Solution

The fourth proportional to 455,166.20, 682,781.70 and 139,622.60 is: 209,443.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,166.20 : 682,781.70 = 139,622.60 : x
  2. Step 2: Convert to fraction form
    455,166.20/682,781.70 = 139,622.60/x
  3. Step 3: Cross multiply
    455,166.20x = 682,781.70 × 139,622.60
  4. Step 4: Simplify right side
    455,166.20x = 95,331,756,186.42
  5. Step 5: Solve for x
    x = 95,331,756,186.42/455,166.20
  6. Step 6: Final answer
    x = 209,443.84

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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.