Finding the Fourth Proportional to 221,061,013.92, 305,058,811.97 and 121,939,591.05
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Solution
The fourth proportional to 221,061,013.92, 305,058,811.97 and 121,939,591.05 is: 168,273,663.99
Step by Step Solution
- Step 1: Write the proportion equation
221,061,013.92 : 305,058,811.97 = 121,939,591.05 : x - Step 2: Convert to fraction form
221,061,013.92/305,058,811.97 = 121,939,591.05/x - Step 3: Cross multiply
221,061,013.92x = 305,058,811.97 × 121,939,591.05 - Step 4: Simplify right side
221,061,013.92x = 37,198,746,778,125,496 - Step 5: Solve for x
x = 37,198,746,778,125,496/221,061,013.92 - Step 6: Final answer
x = 168,273,663.99
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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.