Finding the Fourth Proportional to 308,486.70, 425,708.61 and 172,519.08
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Solution
The fourth proportional to 308,486.70, 425,708.61 and 172,519.08 is: 238,074.63
Step by Step Solution
- Step 1: Write the proportion equation
308,486.70 : 425,708.61 = 172,519.08 : x - Step 2: Convert to fraction form
308,486.70/425,708.61 = 172,519.08/x - Step 3: Cross multiply
308,486.70x = 425,708.61 × 172,519.08 - Step 4: Simplify right side
308,486.70x = 73,442,857,745.28 - Step 5: Solve for x
x = 73,442,857,745.28/308,486.70 - Step 6: Final answer
x = 238,074.63
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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.