Finding the Fourth Proportional to 209,172.78, 288,559.84 and 151,685.99
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Solution
The fourth proportional to 209,172.78, 288,559.84 and 151,685.99 is: 209,255.16
Step by Step Solution
- Step 1: Write the proportion equation
209,172.78 : 288,559.84 = 151,685.99 : x - Step 2: Convert to fraction form
209,172.78/288,559.84 = 151,685.99/x - Step 3: Cross multiply
209,172.78x = 288,559.84 × 151,685.99 - Step 4: Simplify right side
209,172.78x = 43,770,483,182.63 - Step 5: Solve for x
x = 43,770,483,182.63/209,172.78 - Step 6: Final answer
x = 209,255.16
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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.