Finding the Fourth Proportional to 209,368.17, 288,805.05 and 131,720.31
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Solution
The fourth proportional to 209,368.17, 288,805.05 and 131,720.31 is: 181,696.63
Step by Step Solution
- Step 1: Write the proportion equation
209,368.17 : 288,805.05 = 131,720.31 : x - Step 2: Convert to fraction form
209,368.17/288,805.05 = 131,720.31/x - Step 3: Cross multiply
209,368.17x = 288,805.05 × 131,720.31 - Step 4: Simplify right side
209,368.17x = 38,041,490,715.57 - Step 5: Solve for x
x = 38,041,490,715.57/209,368.17 - Step 6: Final answer
x = 181,696.63
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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.