Finding the Fourth Proportional to 305,919.08, 421,998.18 and 284,269.64
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Solution
The fourth proportional to 305,919.08, 421,998.18 and 284,269.64 is: 392,133.99
Step by Step Solution
- Step 1: Write the proportion equation
305,919.08 : 421,998.18 = 284,269.64 : x - Step 2: Convert to fraction form
305,919.08/421,998.18 = 284,269.64/x - Step 3: Cross multiply
305,919.08x = 421,998.18 × 284,269.64 - Step 4: Simplify right side
305,919.08x = 119,961,270,709.26 - Step 5: Solve for x
x = 119,961,270,709.26/305,919.08 - Step 6: Final answer
x = 392,133.99
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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.