Finding the Fourth Proportional to 206,651.18, 309,680.76 and 117,721.08
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Solution
The fourth proportional to 206,651.18, 309,680.76 and 117,721.08 is: 176,412.99
Step by Step Solution
- Step 1: Write the proportion equation
206,651.18 : 309,680.76 = 117,721.08 : x - Step 2: Convert to fraction form
206,651.18/309,680.76 = 117,721.08/x - Step 3: Cross multiply
206,651.18x = 309,680.76 × 117,721.08 - Step 4: Simplify right side
206,651.18x = 36,455,953,522.42 - Step 5: Solve for x
x = 36,455,953,522.42/206,651.18 - Step 6: Final answer
x = 176,412.99
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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.