Finding the Fourth Proportional to 221,722.14, 305,879.34 and 135,685.26
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Solution
The fourth proportional to 221,722.14, 305,879.34 and 135,685.26 is: 187,186.17
Step by Step Solution
- Step 1: Write the proportion equation
221,722.14 : 305,879.34 = 135,685.26 : x - Step 2: Convert to fraction form
221,722.14/305,879.34 = 135,685.26/x - Step 3: Cross multiply
221,722.14x = 305,879.34 × 135,685.26 - Step 4: Simplify right side
221,722.14x = 41,503,317,776.53 - Step 5: Solve for x
x = 41,503,317,776.53/221,722.14 - Step 6: Final answer
x = 187,186.17
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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.