Finding the Fourth Proportional to 262,978,293.80, 394,467,440.70 and 255,420,021.80
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Solution
The fourth proportional to 262,978,293.80, 394,467,440.70 and 255,420,021.80 is: 383,130,032.70
Step by Step Solution
- Step 1: Write the proportion equation
262,978,293.80 : 394,467,440.70 = 255,420,021.80 : x - Step 2: Convert to fraction form
262,978,293.80/394,467,440.70 = 255,420,021.80/x - Step 3: Cross multiply
262,978,293.80x = 394,467,440.70 × 255,420,021.80 - Step 4: Simplify right side
262,978,293.80x = 100,754,882,302,984,208 - Step 5: Solve for x
x = 100,754,882,302,984,208/262,978,293.80 - Step 6: Final answer
x = 383,130,032.70
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1.5x scale
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.