Finding the Fourth Proportional to 305,694.75, 458,394.61 and 128,154.09
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Solution
The fourth proportional to 305,694.75, 458,394.61 and 128,154.09 is: 192,169.29
Step by Step Solution
- Step 1: Write the proportion equation
305,694.75 : 458,394.61 = 128,154.09 : x - Step 2: Convert to fraction form
305,694.75/458,394.61 = 128,154.09/x - Step 3: Cross multiply
305,694.75x = 458,394.61 × 128,154.09 - Step 4: Simplify right side
305,694.75x = 58,745,144,105.45 - Step 5: Solve for x
x = 58,745,144,105.45/305,694.75 - Step 6: Final answer
x = 192,169.29
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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.