Finding the Fourth Proportional to 207,991,763.20, 311,987,644.80 and 147,525,587.20
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Solution
The fourth proportional to 207,991,763.20, 311,987,644.80 and 147,525,587.20 is: 221,288,380.80
Step by Step Solution
- Step 1: Write the proportion equation
207,991,763.20 : 311,987,644.80 = 147,525,587.20 : x - Step 2: Convert to fraction form
207,991,763.20/311,987,644.80 = 147,525,587.20/x - Step 3: Cross multiply
207,991,763.20x = 311,987,644.80 × 147,525,587.20 - Step 4: Simplify right side
207,991,763.20x = 46,026,160,498,265,024 - Step 5: Solve for x
x = 46,026,160,498,265,024/207,991,763.20 - Step 6: Final answer
x = 221,288,380.80
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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.