Finding the Fourth Proportional to 221,379,574.80, 332,211,079.80 and 129,263,134.80
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Solution
The fourth proportional to 221,379,574.80, 332,211,079.80 and 129,263,134.80 is: 193,977,450.85
Step by Step Solution
- Step 1: Write the proportion equation
221,379,574.80 : 332,211,079.80 = 129,263,134.80 : x - Step 2: Convert to fraction form
221,379,574.80/332,211,079.80 = 129,263,134.80/x - Step 3: Cross multiply
221,379,574.80x = 332,211,079.80 × 129,263,134.80 - Step 4: Simplify right side
221,379,574.80x = 42,942,645,590,240,960 - Step 5: Solve for x
x = 42,942,645,590,240,960/221,379,574.80 - Step 6: Final answer
x = 193,977,450.85
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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.