Finding the Fourth Proportional to 393,198,211.10, 542,626,563.75 and 214,591,878.92
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Solution
The fourth proportional to 393,198,211.10, 542,626,563.75 and 214,591,878.92 is: 296,143,905.49
Step by Step Solution
- Step 1: Write the proportion equation
393,198,211.10 : 542,626,563.75 = 214,591,878.92 : x - Step 2: Convert to fraction form
393,198,211.10/542,626,563.75 = 214,591,878.92/x - Step 3: Cross multiply
393,198,211.10x = 542,626,563.75 × 214,591,878.92 - Step 4: Simplify right side
393,198,211.10x = 116,443,253,867,567,520 - Step 5: Solve for x
x = 116,443,253,867,567,520/393,198,211.10 - Step 6: Final answer
x = 296,143,905.49
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.