Home / 419,751.23-629,749.89-135,485.64

Finding the Fourth Proportional to 419,751.23, 629,749.89 and 135,485.64

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Solution

The fourth proportional to 419,751.23, 629,749.89 and 135,485.64 is: 203,268.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,751.23 : 629,749.89 = 135,485.64 : x
  2. Step 2: Convert to fraction form
    419,751.23/629,749.89 = 135,485.64/x
  3. Step 3: Cross multiply
    419,751.23x = 629,749.89 × 135,485.64
  4. Step 4: Simplify right side
    419,751.23x = 85,322,066,886.58
  5. Step 5: Solve for x
    x = 85,322,066,886.58/419,751.23
  6. Step 6: Final answer
    x = 203,268.18

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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.