Home / 455,524.20-683,318.70-139,980.60

Finding the Fourth Proportional to 455,524.20, 683,318.70 and 139,980.60

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Solution

The fourth proportional to 455,524.20, 683,318.70 and 139,980.60 is: 209,980.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,524.20 : 683,318.70 = 139,980.60 : x
  2. Step 2: Convert to fraction form
    455,524.20/683,318.70 = 139,980.60/x
  3. Step 3: Cross multiply
    455,524.20x = 683,318.70 × 139,980.60
  4. Step 4: Simplify right side
    455,524.20x = 95,651,361,617.22
  5. Step 5: Solve for x
    x = 95,651,361,617.22/455,524.20
  6. Step 6: Final answer
    x = 209,980.86

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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.