Finding the Fourth Proportional to 207,918,783.10, 311,542,251.45 and 131,104,344.70
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Solution
The fourth proportional to 207,918,783.10, 311,542,251.45 and 131,104,344.70 is: 196,444,698.81
Step by Step Solution
- Step 1: Write the proportion equation
207,918,783.10 : 311,542,251.45 = 131,104,344.70 : x - Step 2: Convert to fraction form
207,918,783.10/311,542,251.45 = 131,104,344.70/x - Step 3: Cross multiply
207,918,783.10x = 311,542,251.45 × 131,104,344.70 - Step 4: Simplify right side
207,918,783.10x = 40,844,542,722,714,872 - Step 5: Solve for x
x = 40,844,542,722,714,872/207,918,783.10 - Step 6: Final answer
x = 196,444,698.81
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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.