Finding the Fourth Proportional to 354,294,532.80, 531,441,799.20 and 281,115,107.10
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Solution
The fourth proportional to 354,294,532.80, 531,441,799.20 and 281,115,107.10 is: 421,672,660.65
Step by Step Solution
- Step 1: Write the proportion equation
354,294,532.80 : 531,441,799.20 = 281,115,107.10 : x - Step 2: Convert to fraction form
354,294,532.80/531,441,799.20 = 281,115,107.10/x - Step 3: Cross multiply
354,294,532.80x = 531,441,799.20 × 281,115,107.10 - Step 4: Simplify right side
354,294,532.80x = 149,396,318,299,524,704 - Step 5: Solve for x
x = 149,396,318,299,524,704/354,294,532.80 - Step 6: Final answer
x = 421,672,660.65
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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.