Finding the Fourth Proportional to 245,805.19, 339,243.50 and 138,396.16
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Solution
The fourth proportional to 245,805.19, 339,243.50 and 138,396.16 is: 191,004.90
Step by Step Solution
- Step 1: Write the proportion equation
245,805.19 : 339,243.50 = 138,396.16 : x - Step 2: Convert to fraction form
245,805.19/339,243.50 = 138,396.16/x - Step 3: Cross multiply
245,805.19x = 339,243.50 × 138,396.16 - Step 4: Simplify right side
245,805.19x = 46,949,995,316.76 - Step 5: Solve for x
x = 46,949,995,316.76/245,805.19 - Step 6: Final answer
x = 191,004.90
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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.