Finding the Fourth Proportional to 279,318,115.70, 418,259,728.20 and 221,444,190.80
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Solution
The fourth proportional to 279,318,115.70, 418,259,728.20 and 221,444,190.80 is: 331,597,493.50
Step by Step Solution
- Step 1: Write the proportion equation
279,318,115.70 : 418,259,728.20 = 221,444,190.80 : x - Step 2: Convert to fraction form
279,318,115.70/418,259,728.20 = 221,444,190.80/x - Step 3: Cross multiply
279,318,115.70x = 418,259,728.20 × 221,444,190.80 - Step 4: Simplify right side
279,318,115.70x = 92,621,187,055,476,944 - Step 5: Solve for x
x = 92,621,187,055,476,944/279,318,115.70 - Step 6: Final answer
x = 331,597,493.50
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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.