Finding the Fourth Proportional to 221,716.92, 305,970.30 and 121,117.08
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Solution
The fourth proportional to 221,716.92, 305,970.30 and 121,117.08 is: 167,142.09
Step by Step Solution
- Step 1: Write the proportion equation
221,716.92 : 305,970.30 = 121,117.08 : x - Step 2: Convert to fraction form
221,716.92/305,970.30 = 121,117.08/x - Step 3: Cross multiply
221,716.92x = 305,970.30 × 121,117.08 - Step 4: Simplify right side
221,716.92x = 37,058,229,302.72 - Step 5: Solve for x
x = 37,058,229,302.72/221,716.92 - Step 6: Final answer
x = 167,142.09
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1.5x scale
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.