Finding the Fourth Proportional to 231,821,108.20, 347,731,662.30 and 207,634,637.80
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Solution
The fourth proportional to 231,821,108.20, 347,731,662.30 and 207,634,637.80 is: 311,451,956.70
Step by Step Solution
- Step 1: Write the proportion equation
231,821,108.20 : 347,731,662.30 = 207,634,637.80 : x - Step 2: Convert to fraction form
231,821,108.20/347,731,662.30 = 207,634,637.80/x - Step 3: Cross multiply
231,821,108.20x = 347,731,662.30 × 207,634,637.80 - Step 4: Simplify right side
231,821,108.20x = 72,201,137,753,252,416 - Step 5: Solve for x
x = 72,201,137,753,252,416/231,821,108.20 - Step 6: Final answer
x = 311,451,956.70
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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.