Finding the Fourth Proportional to 402,421,295.20, 603,631,942.80 and 198,347,951.20
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Solution
The fourth proportional to 402,421,295.20, 603,631,942.80 and 198,347,951.20 is: 297,521,926.80
Step by Step Solution
- Step 1: Write the proportion equation
402,421,295.20 : 603,631,942.80 = 198,347,951.20 : x - Step 2: Convert to fraction form
402,421,295.20/603,631,942.80 = 198,347,951.20/x - Step 3: Cross multiply
402,421,295.20x = 603,631,942.80 × 198,347,951.20 - Step 4: Simplify right side
402,421,295.20x = 119,729,159,133,255,568 - Step 5: Solve for x
x = 119,729,159,133,255,568/402,421,295.20 - Step 6: Final answer
x = 297,521,926.80
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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.