Finding the Fourth Proportional to 210,791.10, 290,891.79 and 115,306.62
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Solution
The fourth proportional to 210,791.10, 290,891.79 and 115,306.62 is: 159,123.17
Step by Step Solution
- Step 1: Write the proportion equation
210,791.10 : 290,891.79 = 115,306.62 : x - Step 2: Convert to fraction form
210,791.10/290,891.79 = 115,306.62/x - Step 3: Cross multiply
210,791.10x = 290,891.79 × 115,306.62 - Step 4: Simplify right side
210,791.10x = 33,541,749,090.65 - Step 5: Solve for x
x = 33,541,749,090.65/210,791.10 - Step 6: Final answer
x = 159,123.17
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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.