Finding the Fourth Proportional to 259,790,414.76, 358,509,717.36 and 142,315,578.54
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Solution
The fourth proportional to 259,790,414.76, 358,509,717.36 and 142,315,578.54 is: 196,394,920.44
Step by Step Solution
- Step 1: Write the proportion equation
259,790,414.76 : 358,509,717.36 = 142,315,578.54 : x - Step 2: Convert to fraction form
259,790,414.76/358,509,717.36 = 142,315,578.54/x - Step 3: Cross multiply
259,790,414.76x = 358,509,717.36 × 142,315,578.54 - Step 4: Simplify right side
259,790,414.76x = 51,021,517,838,300,280 - Step 5: Solve for x
x = 51,021,517,838,300,280/259,790,414.76 - Step 6: Final answer
x = 196,394,920.44
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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.