Finding the Fourth Proportional to 299,542,639.80, 449,313,959.70 and 265,530,415.80
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Solution
The fourth proportional to 299,542,639.80, 449,313,959.70 and 265,530,415.80 is: 398,295,623.70
Step by Step Solution
- Step 1: Write the proportion equation
299,542,639.80 : 449,313,959.70 = 265,530,415.80 : x - Step 2: Convert to fraction form
299,542,639.80/449,313,959.70 = 265,530,415.80/x - Step 3: Cross multiply
299,542,639.80x = 449,313,959.70 × 265,530,415.80 - Step 4: Simplify right side
299,542,639.80x = 119,306,522,543,885,440 - Step 5: Solve for x
x = 119,306,522,543,885,440/299,542,639.80 - Step 6: Final answer
x = 398,295,623.70
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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.