Finding the Fourth Proportional to 490,377.20, 676,721.13 and 275,517.14
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Solution
The fourth proportional to 490,377.20, 676,721.13 and 275,517.14 is: 380,213.99
Step by Step Solution
- Step 1: Write the proportion equation
490,377.20 : 676,721.13 = 275,517.14 : x - Step 2: Convert to fraction form
490,377.20/676,721.13 = 275,517.14/x - Step 3: Cross multiply
490,377.20x = 676,721.13 × 275,517.14 - Step 4: Simplify right side
490,377.20x = 186,448,270,315.17 - Step 5: Solve for x
x = 186,448,270,315.17/490,377.20 - Step 6: Final answer
x = 380,213.99
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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.