Finding the Fourth Proportional to 386,676.99, 580,245.12 and 209,180.07
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Solution
The fourth proportional to 386,676.99, 580,245.12 and 209,180.07 is: 313,894.33
Step by Step Solution
- Step 1: Write the proportion equation
386,676.99 : 580,245.12 = 209,180.07 : x - Step 2: Convert to fraction form
386,676.99/580,245.12 = 209,180.07/x - Step 3: Cross multiply
386,676.99x = 580,245.12 × 209,180.07 - Step 4: Simplify right side
386,676.99x = 121,375,714,818.76 - Step 5: Solve for x
x = 121,375,714,818.76/386,676.99 - Step 6: Final answer
x = 313,894.33
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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.