Finding the Fourth Proportional to 281,357.09, 422,102.78 and 91,817.81
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Solution
The fourth proportional to 281,357.09, 422,102.78 and 91,817.81 is: 137,748.62
Step by Step Solution
- Step 1: Write the proportion equation
281,357.09 : 422,102.78 = 91,817.81 : x - Step 2: Convert to fraction form
281,357.09/422,102.78 = 91,817.81/x - Step 3: Cross multiply
281,357.09x = 422,102.78 × 91,817.81 - Step 4: Simplify right side
281,357.09x = 38,756,550,284.91 - Step 5: Solve for x
x = 38,756,550,284.91/281,357.09 - Step 6: Final answer
x = 137,748.62
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.