Home / 455,469.20-683,268.60-139,878.80

Finding the Fourth Proportional to 455,469.20, 683,268.60 and 139,878.80

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Solution

The fourth proportional to 455,469.20, 683,268.60 and 139,878.80 is: 209,838.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,469.20 : 683,268.60 = 139,878.80 : x
  2. Step 2: Convert to fraction form
    455,469.20/683,268.60 = 139,878.80/x
  3. Step 3: Cross multiply
    455,469.20x = 683,268.60 × 139,878.80
  4. Step 4: Simplify right side
    455,469.20x = 95,574,791,845.68
  5. Step 5: Solve for x
    x = 95,574,791,845.68/455,469.20
  6. Step 6: Final answer
    x = 209,838.10

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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.