Finding the Fourth Proportional to 211,147.29, 291,412.25 and 129,461.09
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Solution
The fourth proportional to 211,147.29, 291,412.25 and 129,461.09 is: 178,674.08
Step by Step Solution
- Step 1: Write the proportion equation
211,147.29 : 291,412.25 = 129,461.09 : x - Step 2: Convert to fraction form
211,147.29/291,412.25 = 129,461.09/x - Step 3: Cross multiply
211,147.29x = 291,412.25 × 129,461.09 - Step 4: Simplify right side
211,147.29x = 37,726,547,524.35 - Step 5: Solve for x
x = 37,726,547,524.35/211,147.29 - Step 6: Final answer
x = 178,674.08
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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.