Finding the Fourth Proportional to 245,257.21, 338,450.43 and 137,825.70
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Solution
The fourth proportional to 245,257.21, 338,450.43 and 137,825.70 is: 190,196.93
Step by Step Solution
- Step 1: Write the proportion equation
245,257.21 : 338,450.43 = 137,825.70 : x - Step 2: Convert to fraction form
245,257.21/338,450.43 = 137,825.70/x - Step 3: Cross multiply
245,257.21x = 338,450.43 × 137,825.70 - Step 4: Simplify right side
245,257.21x = 46,647,167,430.05 - Step 5: Solve for x
x = 46,647,167,430.05/245,257.21 - Step 6: Final answer
x = 190,196.93
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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.