Finding the Fourth Proportional to 279,936,922.20, 419,905,383.30 and 259,529,587.80
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Solution
The fourth proportional to 279,936,922.20, 419,905,383.30 and 259,529,587.80 is: 389,294,381.70
Step by Step Solution
- Step 1: Write the proportion equation
279,936,922.20 : 419,905,383.30 = 259,529,587.80 : x - Step 2: Convert to fraction form
279,936,922.20/419,905,383.30 = 259,529,587.80/x - Step 3: Cross multiply
279,936,922.20x = 419,905,383.30 × 259,529,587.80 - Step 4: Simplify right side
279,936,922.20x = 108,977,871,042,850,016 - Step 5: Solve for x
x = 108,977,871,042,850,016/279,936,922.20 - Step 6: Final answer
x = 389,294,381.70
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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.