Finding the Fourth Proportional to 199,378.80, 298,981.80 and 81,010.80
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Solution
The fourth proportional to 199,378.80, 298,981.80 and 81,010.80 is: 121,481.09
Step by Step Solution
- Step 1: Write the proportion equation
199,378.80 : 298,981.80 = 81,010.80 : x - Step 2: Convert to fraction form
199,378.80/298,981.80 = 81,010.80/x - Step 3: Cross multiply
199,378.80x = 298,981.80 × 81,010.80 - Step 4: Simplify right side
199,378.80x = 24,220,754,803.44 - Step 5: Solve for x
x = 24,220,754,803.44/199,378.80 - Step 6: Final answer
x = 121,481.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.