Finding the Fourth Proportional to 305,694.48, 458,556.44 and 128,207.28
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Solution
The fourth proportional to 305,694.48, 458,556.44 and 128,207.28 is: 192,317.09
Step by Step Solution
- Step 1: Write the proportion equation
305,694.48 : 458,556.44 = 128,207.28 : x - Step 2: Convert to fraction form
305,694.48/458,556.44 = 128,207.28/x - Step 3: Cross multiply
305,694.48x = 458,556.44 × 128,207.28 - Step 4: Simplify right side
305,694.48x = 58,790,273,898.88 - Step 5: Solve for x
x = 58,790,273,898.88/305,694.48 - Step 6: Final answer
x = 192,317.09
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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.