Finding the Fourth Proportional to 221,832.75, 306,129.21 and 121,230.75
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Solution
The fourth proportional to 221,832.75, 306,129.21 and 121,230.75 is: 167,298.44
Step by Step Solution
- Step 1: Write the proportion equation
221,832.75 : 306,129.21 = 121,230.75 : x - Step 2: Convert to fraction form
221,832.75/306,129.21 = 121,230.75/x - Step 3: Cross multiply
221,832.75x = 306,129.21 × 121,230.75 - Step 4: Simplify right side
221,832.75x = 37,112,273,725.21 - Step 5: Solve for x
x = 37,112,273,725.21/221,832.75 - Step 6: Final answer
x = 167,298.44
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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.