Home / 455,422.20-683,133.30-139,878.60

Finding the Fourth Proportional to 455,422.20, 683,133.30 and 139,878.60

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Solution

The fourth proportional to 455,422.20, 683,133.30 and 139,878.60 is: 209,817.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,422.20 : 683,133.30 = 139,878.60 : x
  2. Step 2: Convert to fraction form
    455,422.20/683,133.30 = 139,878.60/x
  3. Step 3: Cross multiply
    455,422.20x = 683,133.30 × 139,878.60
  4. Step 4: Simplify right side
    455,422.20x = 95,555,729,617.38
  5. Step 5: Solve for x
    x = 95,555,729,617.38/455,422.20
  6. Step 6: Final answer
    x = 209,817.90

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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.