Finding the Fourth Proportional to 289,788,000.20, 434,682,000.30 and 261,122,553.80
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Solution
The fourth proportional to 289,788,000.20, 434,682,000.30 and 261,122,553.80 is: 391,683,830.70
Step by Step Solution
- Step 1: Write the proportion equation
289,788,000.20 : 434,682,000.30 = 261,122,553.80 : x - Step 2: Convert to fraction form
289,788,000.20/434,682,000.30 = 261,122,553.80/x - Step 3: Cross multiply
289,788,000.20x = 434,682,000.30 × 261,122,553.80 - Step 4: Simplify right side
289,788,000.20x = 113,505,274,009,228,368 - Step 5: Solve for x
x = 113,505,274,009,228,368/289,788,000.20 - Step 6: Final answer
x = 391,683,830.70
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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.