Finding the Fourth Proportional to 221,788.21, 306,067.68 and 121,186.21
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Solution
The fourth proportional to 221,788.21, 306,067.68 and 121,186.21 is: 167,236.94
Step by Step Solution
- Step 1: Write the proportion equation
221,788.21 : 306,067.68 = 121,186.21 : x - Step 2: Convert to fraction form
221,788.21/306,067.68 = 121,186.21/x - Step 3: Cross multiply
221,788.21x = 306,067.68 × 121,186.21 - Step 4: Simplify right side
221,788.21x = 37,091,182,142.69 - Step 5: Solve for x
x = 37,091,182,142.69/221,788.21 - Step 6: Final answer
x = 167,236.94
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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.