Finding the Fourth Proportional to 258,729.57, 388,067.09 and 69,209.08
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Solution
The fourth proportional to 258,729.57, 388,067.09 and 69,209.08 is: 103,806.32
Step by Step Solution
- Step 1: Write the proportion equation
258,729.57 : 388,067.09 = 69,209.08 : x - Step 2: Convert to fraction form
258,729.57/388,067.09 = 69,209.08/x - Step 3: Cross multiply
258,729.57x = 388,067.09 × 69,209.08 - Step 4: Simplify right side
258,729.57x = 26,857,764,960.96 - Step 5: Solve for x
x = 26,857,764,960.96/258,729.57 - Step 6: Final answer
x = 103,806.32
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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.