Finding the Fourth Proportional to 378,099.05, 521,538.30 and 225,022.95
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Solution
The fourth proportional to 378,099.05, 521,538.30 and 225,022.95 is: 310,389.80
Step by Step Solution
- Step 1: Write the proportion equation
378,099.05 : 521,538.30 = 225,022.95 : x - Step 2: Convert to fraction form
378,099.05/521,538.30 = 225,022.95/x - Step 3: Cross multiply
378,099.05x = 521,538.30 × 225,022.95 - Step 4: Simplify right side
378,099.05x = 117,358,086,803.99 - Step 5: Solve for x
x = 117,358,086,803.99/378,099.05 - Step 6: Final answer
x = 310,389.80
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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.