Finding the Fourth Proportional to 198,153,609.60, 297,230,414.40 and 147,135,273.60
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Solution
The fourth proportional to 198,153,609.60, 297,230,414.40 and 147,135,273.60 is: 220,702,910.40
Step by Step Solution
- Step 1: Write the proportion equation
198,153,609.60 : 297,230,414.40 = 147,135,273.60 : x - Step 2: Convert to fraction form
198,153,609.60/297,230,414.40 = 147,135,273.60/x - Step 3: Cross multiply
198,153,609.60x = 297,230,414.40 × 147,135,273.60 - Step 4: Simplify right side
198,153,609.60x = 43,733,078,344,985,376 - Step 5: Solve for x
x = 43,733,078,344,985,376/198,153,609.60 - Step 6: Final answer
x = 220,702,910.40
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1.5x scale
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.