Finding the Fourth Proportional to 388,070,816.80, 582,106,225.20 and 194,012,183.20
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Solution
The fourth proportional to 388,070,816.80, 582,106,225.20 and 194,012,183.20 is: 291,018,274.80
Step by Step Solution
- Step 1: Write the proportion equation
388,070,816.80 : 582,106,225.20 = 194,012,183.20 : x - Step 2: Convert to fraction form
388,070,816.80/582,106,225.20 = 194,012,183.20/x - Step 3: Cross multiply
388,070,816.80x = 582,106,225.20 × 194,012,183.20 - Step 4: Simplify right side
388,070,816.80x = 112,935,699,605,362,864 - Step 5: Solve for x
x = 112,935,699,605,362,864/388,070,816.80 - Step 6: Final answer
x = 291,018,274.80
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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.