Finding the Third Proportional to 138,919 and 215,243
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Solution
The third proportional to 138,919 and 215,243 is: 333,500.45
Step by Step Solution
- Step 1: Write the proportion equation
138,919 : 215,243 = 215,243 : x - Step 2: Convert to fraction form
138,919/215,243 = 215,243/x - Step 3: Cross multiply
138,919x = 215,243 × 215,243 - Step 4: Simplify right side
138,919x = 46,329,549,049 - Step 5: Solve for x
x = 46,329,549,049/138,919 - Step 6: Final answer
x = 333,500.45
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Why These Related Problems?
These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.