Finding the Fourth Proportional to 317,171.84, 437,717.12 and 209,553.21
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Solution
The fourth proportional to 317,171.84, 437,717.12 and 209,553.21 is: 289,196.63
Step by Step Solution
- Step 1: Write the proportion equation
317,171.84 : 437,717.12 = 209,553.21 : x - Step 2: Convert to fraction form
317,171.84/437,717.12 = 209,553.21/x - Step 3: Cross multiply
317,171.84x = 437,717.12 × 209,553.21 - Step 4: Simplify right side
317,171.84x = 91,725,026,520.19 - Step 5: Solve for x
x = 91,725,026,520.19/317,171.84 - Step 6: Final answer
x = 289,196.63
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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.