Finding the Fourth Proportional to 206,815.68, 285,405.48 and 117,391.68
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Solution
The fourth proportional to 206,815.68, 285,405.48 and 117,391.68 is: 162,000.43
Step by Step Solution
- Step 1: Write the proportion equation
206,815.68 : 285,405.48 = 117,391.68 : x - Step 2: Convert to fraction form
206,815.68/285,405.48 = 117,391.68/x - Step 3: Cross multiply
206,815.68x = 285,405.48 × 117,391.68 - Step 4: Simplify right side
206,815.68x = 33,504,228,778.41 - Step 5: Solve for x
x = 33,504,228,778.41/206,815.68 - Step 6: Final answer
x = 162,000.43
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.