Finding the Fourth Proportional to 306,018.75, 422,309.69 and 168,212.72
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Solution
The fourth proportional to 306,018.75, 422,309.69 and 168,212.72 is: 232,135.65
Step by Step Solution
- Step 1: Write the proportion equation
306,018.75 : 422,309.69 = 168,212.72 : x - Step 2: Convert to fraction form
306,018.75/422,309.69 = 168,212.72/x - Step 3: Cross multiply
306,018.75x = 422,309.69 × 168,212.72 - Step 4: Simplify right side
306,018.75x = 71,037,859,315.44 - Step 5: Solve for x
x = 71,037,859,315.44/306,018.75 - Step 6: Final answer
x = 232,135.65
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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.