Finding the Fourth Proportional to 209,268.76, 288,644.68 and 137,625.88
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Solution
The fourth proportional to 209,268.76, 288,644.68 and 137,625.88 is: 189,827.56
Step by Step Solution
- Step 1: Write the proportion equation
209,268.76 : 288,644.68 = 137,625.88 : x - Step 2: Convert to fraction form
209,268.76/288,644.68 = 137,625.88/x - Step 3: Cross multiply
209,268.76x = 288,644.68 × 137,625.88 - Step 4: Simplify right side
209,268.76x = 39,724,978,092.32 - Step 5: Solve for x
x = 39,724,978,092.32/209,268.76 - Step 6: Final answer
x = 189,827.56
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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.