Finding the Fourth Proportional to 221,276,907.80, 331,915,361.70 and 119,240,235.80
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Solution
The fourth proportional to 221,276,907.80, 331,915,361.70 and 119,240,235.80 is: 178,860,353.70
Step by Step Solution
- Step 1: Write the proportion equation
221,276,907.80 : 331,915,361.70 = 119,240,235.80 : x - Step 2: Convert to fraction form
221,276,907.80/331,915,361.70 = 119,240,235.80/x - Step 3: Cross multiply
221,276,907.80x = 331,915,361.70 × 119,240,235.80 - Step 4: Simplify right side
221,276,907.80x = 39,577,665,994,750,288 - Step 5: Solve for x
x = 39,577,665,994,750,288/221,276,907.80 - Step 6: Final answer
x = 178,860,353.70
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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.