Finding the Fourth Proportional to 206,336.22, 309,531.87 and 81,648.06
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Solution
The fourth proportional to 206,336.22, 309,531.87 and 81,648.06 is: 122,482.99
Step by Step Solution
- Step 1: Write the proportion equation
206,336.22 : 309,531.87 = 81,648.06 : x - Step 2: Convert to fraction form
206,336.22/309,531.87 = 81,648.06/x - Step 3: Cross multiply
206,336.22x = 309,531.87 × 81,648.06 - Step 4: Simplify right side
206,336.22x = 25,272,676,693.67 - Step 5: Solve for x
x = 25,272,676,693.67/206,336.22 - Step 6: Final answer
x = 122,482.99
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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.