Finding the Fourth Proportional to 212,821.15, 293,678.97 and 122,164.53
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Solution
The fourth proportional to 212,821.15, 293,678.97 and 122,164.53 is: 168,578.89
Step by Step Solution
- Step 1: Write the proportion equation
212,821.15 : 293,678.97 = 122,164.53 : x - Step 2: Convert to fraction form
212,821.15/293,678.97 = 122,164.53/x - Step 3: Cross multiply
212,821.15x = 293,678.97 × 122,164.53 - Step 4: Simplify right side
212,821.15x = 35,877,154,361.83 - Step 5: Solve for x
x = 35,877,154,361.83/212,821.15 - Step 6: Final answer
x = 168,578.89
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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.