Finding the Fourth Proportional to 245,394.70, 338,639.77 and 136,496.68
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Solution
The fourth proportional to 245,394.70, 338,639.77 and 136,496.68 is: 188,362.68
Step by Step Solution
- Step 1: Write the proportion equation
245,394.70 : 338,639.77 = 136,496.68 : x - Step 2: Convert to fraction form
245,394.70/338,639.77 = 136,496.68/x - Step 3: Cross multiply
245,394.70x = 338,639.77 × 136,496.68 - Step 4: Simplify right side
245,394.70x = 46,223,203,644.99 - Step 5: Solve for x
x = 46,223,203,644.99/245,394.70 - Step 6: Final answer
x = 188,362.68
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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.