Finding the Fourth Proportional to 206,326.84, 309,490.26 and 136,189.75
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Solution
The fourth proportional to 206,326.84, 309,490.26 and 136,189.75 is: 204,284.63
Step by Step Solution
- Step 1: Write the proportion equation
206,326.84 : 309,490.26 = 136,189.75 : x - Step 2: Convert to fraction form
206,326.84/309,490.26 = 136,189.75/x - Step 3: Cross multiply
206,326.84x = 309,490.26 × 136,189.75 - Step 4: Simplify right side
206,326.84x = 42,149,401,136.84 - Step 5: Solve for x
x = 42,149,401,136.84/206,326.84 - Step 6: Final answer
x = 204,284.63
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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.