Finding the Fourth Proportional to 221,380.88, 305,529.14 and 135,390.17
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Solution
The fourth proportional to 221,380.88, 305,529.14 and 135,390.17 is: 186,852.82
Step by Step Solution
- Step 1: Write the proportion equation
221,380.88 : 305,529.14 = 135,390.17 : x - Step 2: Convert to fraction form
221,380.88/305,529.14 = 135,390.17/x - Step 3: Cross multiply
221,380.88x = 305,529.14 × 135,390.17 - Step 4: Simplify right side
221,380.88x = 41,365,639,999.96 - Step 5: Solve for x
x = 41,365,639,999.96/221,380.88 - Step 6: Final answer
x = 186,852.82
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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.