Finding the Fourth Proportional to 221,701.49, 305,850.87 and 135,664.61
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Solution
The fourth proportional to 221,701.49, 305,850.87 and 135,664.61 is: 187,157.68
Step by Step Solution
- Step 1: Write the proportion equation
221,701.49 : 305,850.87 = 135,664.61 : x - Step 2: Convert to fraction form
221,701.49/305,850.87 = 135,664.61/x - Step 3: Cross multiply
221,701.49x = 305,850.87 × 135,664.61 - Step 4: Simplify right side
221,701.49x = 41,493,136,789.13 - Step 5: Solve for x
x = 41,493,136,789.13/221,701.49 - Step 6: Final answer
x = 187,157.68
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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.