Finding the Fourth Proportional to 279,979.70, 419,969.55 and 201,247.70
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Solution
The fourth proportional to 279,979.70, 419,969.55 and 201,247.70 is: 301,871.55
Step by Step Solution
- Step 1: Write the proportion equation
279,979.70 : 419,969.55 = 201,247.70 : x - Step 2: Convert to fraction form
279,979.70/419,969.55 = 201,247.70/x - Step 3: Cross multiply
279,979.70x = 419,969.55 × 201,247.70 - Step 4: Simplify right side
279,979.70x = 84,517,906,007.54 - Step 5: Solve for x
x = 84,517,906,007.54/279,979.70 - Step 6: Final answer
x = 301,871.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.