Finding the Fourth Proportional to 379,487.36, 523,687.74 and 209,717.84
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Solution
The fourth proportional to 379,487.36, 523,687.74 and 209,717.84 is: 289,407.96
Step by Step Solution
- Step 1: Write the proportion equation
379,487.36 : 523,687.74 = 209,717.84 : x - Step 2: Convert to fraction form
379,487.36/523,687.74 = 209,717.84/x - Step 3: Cross multiply
379,487.36x = 523,687.74 × 209,717.84 - Step 4: Simplify right side
379,487.36x = 109,826,661,667.28 - Step 5: Solve for x
x = 109,826,661,667.28/379,487.36 - Step 6: Final answer
x = 289,407.96
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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.