Finding the Fourth Proportional to 212,416,824.80, 318,625,237.20 and 130,787,487.20
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Solution
The fourth proportional to 212,416,824.80, 318,625,237.20 and 130,787,487.20 is: 196,181,230.80
Step by Step Solution
- Step 1: Write the proportion equation
212,416,824.80 : 318,625,237.20 = 130,787,487.20 : x - Step 2: Convert to fraction form
212,416,824.80/318,625,237.20 = 130,787,487.20/x - Step 3: Cross multiply
212,416,824.80x = 318,625,237.20 × 130,787,487.20 - Step 4: Simplify right side
212,416,824.80x = 41,672,194,131,891,960 - Step 5: Solve for x
x = 41,672,194,131,891,960/212,416,824.80 - Step 6: Final answer
x = 196,181,230.80
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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.