Finding the Fourth Proportional to 198,685,285.70, 298,367,998.95 and 107,986,021.70
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Solution
The fourth proportional to 198,685,285.70, 298,367,998.95 and 107,986,021.70 is: 162,163,861.79
Step by Step Solution
- Step 1: Write the proportion equation
198,685,285.70 : 298,367,998.95 = 107,986,021.70 : x - Step 2: Convert to fraction form
198,685,285.70/298,367,998.95 = 107,986,021.70/x - Step 3: Cross multiply
198,685,285.70x = 298,367,998.95 × 107,986,021.70 - Step 4: Simplify right side
198,685,285.70x = 32,219,573,209,200,276 - Step 5: Solve for x
x = 32,219,573,209,200,276/198,685,285.70 - Step 6: Final answer
x = 162,163,861.79
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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.