Finding the Fourth Proportional to 206,554.20, 285,021.36 and 115,891.26
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Solution
The fourth proportional to 206,554.20, 285,021.36 and 115,891.26 is: 159,916.79
Step by Step Solution
- Step 1: Write the proportion equation
206,554.20 : 285,021.36 = 115,891.26 : x - Step 2: Convert to fraction form
206,554.20/285,021.36 = 115,891.26/x - Step 3: Cross multiply
206,554.20x = 285,021.36 × 115,891.26 - Step 4: Simplify right side
206,554.20x = 33,031,484,537.31 - Step 5: Solve for x
x = 33,031,484,537.31/206,554.20 - Step 6: Final answer
x = 159,916.79
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1.5x scale
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.