Finding the Fourth Proportional to 219,732.21, 303,232.79 and 129,091.95
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Solution
The fourth proportional to 219,732.21, 303,232.79 and 129,091.95 is: 178,148.26
Step by Step Solution
- Step 1: Write the proportion equation
219,732.21 : 303,232.79 = 129,091.95 : x - Step 2: Convert to fraction form
219,732.21/303,232.79 = 129,091.95/x - Step 3: Cross multiply
219,732.21x = 303,232.79 × 129,091.95 - Step 4: Simplify right side
219,732.21x = 39,144,911,519.58 - Step 5: Solve for x
x = 39,144,911,519.58/219,732.21 - Step 6: Final answer
x = 178,148.26
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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.