Finding the Fourth Proportional to 311,299.68, 431,328.66 and 304,573.44
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Solution
The fourth proportional to 311,299.68, 431,328.66 and 304,573.44 is: 422,008.96
Step by Step Solution
- Step 1: Write the proportion equation
311,299.68 : 431,328.66 = 304,573.44 : x - Step 2: Convert to fraction form
311,299.68/431,328.66 = 304,573.44/x - Step 3: Cross multiply
311,299.68x = 431,328.66 × 304,573.44 - Step 4: Simplify right side
311,299.68x = 131,371,253,746.79 - Step 5: Solve for x
x = 131,371,253,746.79/311,299.68 - Step 6: Final answer
x = 422,008.96
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.