Finding the Fourth Proportional to 281,217.69, 421,870.48 and 91,634.09
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Solution
The fourth proportional to 281,217.69, 421,870.48 and 91,634.09 is: 137,465.45
Step by Step Solution
- Step 1: Write the proportion equation
281,217.69 : 421,870.48 = 91,634.09 : x - Step 2: Convert to fraction form
281,217.69/421,870.48 = 91,634.09/x - Step 3: Cross multiply
281,217.69x = 421,870.48 × 91,634.09 - Step 4: Simplify right side
281,217.69x = 38,657,715,194.23 - Step 5: Solve for x
x = 38,657,715,194.23/281,217.69 - Step 6: Final answer
x = 137,465.45
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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.