Home / 419,877.26-629,815.88-139,394.51

Finding the Fourth Proportional to 419,877.26, 629,815.88 and 139,394.51

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Solution

The fourth proportional to 419,877.26, 629,815.88 and 139,394.51 is: 209,091.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,877.26 : 629,815.88 = 139,394.51 : x
  2. Step 2: Convert to fraction form
    419,877.26/629,815.88 = 139,394.51/x
  3. Step 3: Cross multiply
    419,877.26x = 629,815.88 × 139,394.51
  4. Step 4: Simplify right side
    419,877.26x = 87,792,874,498.58
  5. Step 5: Solve for x
    x = 87,792,874,498.58/419,877.26
  6. Step 6: Final answer
    x = 209,091.76

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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.