Home / 455,414.20-683,121.30-139,870.60

Finding the Fourth Proportional to 455,414.20, 683,121.30 and 139,870.60

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Solution

The fourth proportional to 455,414.20, 683,121.30 and 139,870.60 is: 209,805.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,414.20 : 683,121.30 = 139,870.60 : x
  2. Step 2: Convert to fraction form
    455,414.20/683,121.30 = 139,870.60/x
  3. Step 3: Cross multiply
    455,414.20x = 683,121.30 × 139,870.60
  4. Step 4: Simplify right side
    455,414.20x = 95,548,586,103.78
  5. Step 5: Solve for x
    x = 95,548,586,103.78/455,414.20
  6. Step 6: Final answer
    x = 209,805.90

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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.