Finding the Fourth Proportional to 221,679.09, 305,917.50 and 126,185.81
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Solution
The fourth proportional to 221,679.09, 305,917.50 and 126,185.81 is: 174,136.61
Step by Step Solution
- Step 1: Write the proportion equation
221,679.09 : 305,917.50 = 126,185.81 : x - Step 2: Convert to fraction form
221,679.09/305,917.50 = 126,185.81/x - Step 3: Cross multiply
221,679.09x = 305,917.50 × 126,185.81 - Step 4: Simplify right side
221,679.09x = 38,602,446,001.09 - Step 5: Solve for x
x = 38,602,446,001.09/221,679.09 - Step 6: Final answer
x = 174,136.61
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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.