Finding the Fourth Proportional to 221,747.40, 305,924.58 and 136,716.84
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Solution
The fourth proportional to 221,747.40, 305,924.58 and 136,716.84 is: 188,615.70
Step by Step Solution
- Step 1: Write the proportion equation
221,747.40 : 305,924.58 = 136,716.84 : x - Step 2: Convert to fraction form
221,747.40/305,924.58 = 136,716.84/x - Step 3: Cross multiply
221,747.40x = 305,924.58 × 136,716.84 - Step 4: Simplify right side
221,747.40x = 41,825,041,855.93 - Step 5: Solve for x
x = 41,825,041,855.93/221,747.40 - Step 6: Final answer
x = 188,615.70
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1.5x scale
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.