Finding the Fourth Proportional to 212,911,696.20, 318,919,646.70 and 177,079,888.20
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Solution
The fourth proportional to 212,911,696.20, 318,919,646.70 and 177,079,888.20 is: 265,247,313.28
Step by Step Solution
- Step 1: Write the proportion equation
212,911,696.20 : 318,919,646.70 = 177,079,888.20 : x - Step 2: Convert to fraction form
212,911,696.20/318,919,646.70 = 177,079,888.20/x - Step 3: Cross multiply
212,911,696.20x = 318,919,646.70 × 177,079,888.20 - Step 4: Simplify right side
212,911,696.20x = 56,474,255,382,419,496 - Step 5: Solve for x
x = 56,474,255,382,419,496/212,911,696.20 - Step 6: Final answer
x = 265,247,313.28
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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.