Finding the Fourth Proportional to 211,388.10, 291,709.26 and 115,891.53
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Solution
The fourth proportional to 211,388.10, 291,709.26 and 115,891.53 is: 159,926.85
Step by Step Solution
- Step 1: Write the proportion equation
211,388.10 : 291,709.26 = 115,891.53 : x - Step 2: Convert to fraction form
211,388.10/291,709.26 = 115,891.53/x - Step 3: Cross multiply
211,388.10x = 291,709.26 × 115,891.53 - Step 4: Simplify right side
211,388.10x = 33,806,632,456.57 - Step 5: Solve for x
x = 33,806,632,456.57/211,388.10 - Step 6: Final answer
x = 159,926.85
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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.