Finding the Fourth Proportional to 543,628.40, 815,053.80 and 243,863.60
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Solution
The fourth proportional to 543,628.40, 815,053.80 and 243,863.60 is: 365,620.99
Step by Step Solution
- Step 1: Write the proportion equation
543,628.40 : 815,053.80 = 243,863.60 : x - Step 2: Convert to fraction form
543,628.40/815,053.80 = 243,863.60/x - Step 3: Cross multiply
543,628.40x = 815,053.80 × 243,863.60 - Step 4: Simplify right side
543,628.40x = 198,761,953,861.68 - Step 5: Solve for x
x = 198,761,953,861.68/543,628.40 - Step 6: Final answer
x = 365,620.99
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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.