Finding the Fourth Proportional to 207,660,683.70, 311,491,025.55 and 86,476,389.30
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Solution
The fourth proportional to 207,660,683.70, 311,491,025.55 and 86,476,389.30 is: 129,714,583.95
Step by Step Solution
- Step 1: Write the proportion equation
207,660,683.70 : 311,491,025.55 = 86,476,389.30 : x - Step 2: Convert to fraction form
207,660,683.70/311,491,025.55 = 86,476,389.30/x - Step 3: Cross multiply
207,660,683.70x = 311,491,025.55 × 86,476,389.30 - Step 4: Simplify right side
207,660,683.70x = 26,936,619,188,918,048 - Step 5: Solve for x
x = 26,936,619,188,918,048/207,660,683.70 - Step 6: Final answer
x = 129,714,583.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.