Finding the Fourth Proportional to 261,021.20, 391,531.80 and 176,821.70
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Solution
The fourth proportional to 261,021.20, 391,531.80 and 176,821.70 is: 265,232.55
Step by Step Solution
- Step 1: Write the proportion equation
261,021.20 : 391,531.80 = 176,821.70 : x - Step 2: Convert to fraction form
261,021.20/391,531.80 = 176,821.70/x - Step 3: Cross multiply
261,021.20x = 391,531.80 × 176,821.70 - Step 4: Simplify right side
261,021.20x = 69,231,318,480.06 - Step 5: Solve for x
x = 69,231,318,480.06/261,021.20 - Step 6: Final answer
x = 265,232.55
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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.