Finding the Fourth Proportional to 256,343.05, 353,783.47 and 154,419.97
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Solution
The fourth proportional to 256,343.05, 353,783.47 and 154,419.97 is: 213,117.66
Step by Step Solution
- Step 1: Write the proportion equation
256,343.05 : 353,783.47 = 154,419.97 : x - Step 2: Convert to fraction form
256,343.05/353,783.47 = 154,419.97/x - Step 3: Cross multiply
256,343.05x = 353,783.47 × 154,419.97 - Step 4: Simplify right side
256,343.05x = 54,631,232,940.57 - Step 5: Solve for x
x = 54,631,232,940.57/256,343.05 - Step 6: Final answer
x = 213,117.66
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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.