Finding the Fourth Proportional to 261,491,420.84, 360,874,481.20 and 144,016,719.92
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Solution
The fourth proportional to 261,491,420.84, 360,874,481.20 and 144,016,719.92 is: 198,752,061.99
Step by Step Solution
- Step 1: Write the proportion equation
261,491,420.84 : 360,874,481.20 = 144,016,719.92 : x - Step 2: Convert to fraction form
261,491,420.84/360,874,481.20 = 144,016,719.92/x - Step 3: Cross multiply
261,491,420.84x = 360,874,481.20 × 144,016,719.92 - Step 4: Simplify right side
261,491,420.84x = 51,971,959,085,255,696 - Step 5: Solve for x
x = 51,971,959,085,255,696/261,491,420.84 - Step 6: Final answer
x = 198,752,061.99
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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.