Home / 419,268.06-629,000.37-138,785.22

Finding the Fourth Proportional to 419,268.06, 629,000.37 and 138,785.22

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Solution

The fourth proportional to 419,268.06, 629,000.37 and 138,785.22 is: 208,210.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,268.06 : 629,000.37 = 138,785.22 : x
  2. Step 2: Convert to fraction form
    419,268.06/629,000.37 = 138,785.22/x
  3. Step 3: Cross multiply
    419,268.06x = 629,000.37 × 138,785.22
  4. Step 4: Simplify right side
    419,268.06x = 87,295,954,730.53
  5. Step 5: Solve for x
    x = 87,295,954,730.53/419,268.06
  6. Step 6: Final answer
    x = 208,210.36

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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.