Finding the Fourth Proportional to 289,161.09, 399,026.66 and 161,812.08
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Solution
The fourth proportional to 289,161.09, 399,026.66 and 161,812.08 is: 223,291.91
Step by Step Solution
- Step 1: Write the proportion equation
289,161.09 : 399,026.66 = 161,812.08 : x - Step 2: Convert to fraction form
289,161.09/399,026.66 = 161,812.08/x - Step 3: Cross multiply
289,161.09x = 399,026.66 × 161,812.08 - Step 4: Simplify right side
289,161.09x = 64,567,333,020.99 - Step 5: Solve for x
x = 64,567,333,020.99/289,161.09 - Step 6: Final answer
x = 223,291.91
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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.