Finding the Fourth Proportional to 221,563.68, 305,750.16 and 136,678.56
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Solution
The fourth proportional to 221,563.68, 305,750.16 and 136,678.56 is: 188,611.65
Step by Step Solution
- Step 1: Write the proportion equation
221,563.68 : 305,750.16 = 136,678.56 : x - Step 2: Convert to fraction form
221,563.68/305,750.16 = 136,678.56/x - Step 3: Cross multiply
221,563.68x = 305,750.16 × 136,678.56 - Step 4: Simplify right side
221,563.68x = 41,789,491,588.57 - Step 5: Solve for x
x = 41,789,491,588.57/221,563.68 - Step 6: Final answer
x = 188,611.65
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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.