Finding the Fourth Proportional to 198,998.10, 298,497.15 and 132,221.70
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Solution
The fourth proportional to 198,998.10, 298,497.15 and 132,221.70 is: 198,332.55
Step by Step Solution
- Step 1: Write the proportion equation
198,998.10 : 298,497.15 = 132,221.70 : x - Step 2: Convert to fraction form
198,998.10/298,497.15 = 132,221.70/x - Step 3: Cross multiply
198,998.10x = 298,497.15 × 132,221.70 - Step 4: Simplify right side
198,998.10x = 39,467,800,618.16 - Step 5: Solve for x
x = 39,467,800,618.16/198,998.10 - Step 6: Final answer
x = 198,332.55
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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.