Finding the Fourth Proportional to 354,721.20, 489,079.68 and 220,351.92
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Solution
The fourth proportional to 354,721.20, 489,079.68 and 220,351.92 is: 303,815.07
Step by Step Solution
- Step 1: Write the proportion equation
354,721.20 : 489,079.68 = 220,351.92 : x - Step 2: Convert to fraction form
354,721.20/489,079.68 = 220,351.92/x - Step 3: Cross multiply
354,721.20x = 489,079.68 × 220,351.92 - Step 4: Simplify right side
354,721.20x = 107,769,646,520.99 - Step 5: Solve for x
x = 107,769,646,520.99/354,721.20 - Step 6: Final answer
x = 303,815.07
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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.