Finding the Fourth Proportional to 221,653.14, 305,805.49 and 126,135.94
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Solution
The fourth proportional to 221,653.14, 305,805.49 and 126,135.94 is: 174,024.44
Step by Step Solution
- Step 1: Write the proportion equation
221,653.14 : 305,805.49 = 126,135.94 : x - Step 2: Convert to fraction form
221,653.14/305,805.49 = 126,135.94/x - Step 3: Cross multiply
221,653.14x = 305,805.49 × 126,135.94 - Step 4: Simplify right side
221,653.14x = 38,573,062,938.31 - Step 5: Solve for x
x = 38,573,062,938.31/221,653.14 - Step 6: Final answer
x = 174,024.44
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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.