Finding the Fourth Proportional to 402,478.20, 603,790.20 and 202,294.80
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Solution
The fourth proportional to 402,478.20, 603,790.20 and 202,294.80 is: 303,478.84
Step by Step Solution
- Step 1: Write the proportion equation
402,478.20 : 603,790.20 = 202,294.80 : x - Step 2: Convert to fraction form
402,478.20/603,790.20 = 202,294.80/x - Step 3: Cross multiply
402,478.20x = 603,790.20 × 202,294.80 - Step 4: Simplify right side
402,478.20x = 122,143,617,750.96 - Step 5: Solve for x
x = 122,143,617,750.96/402,478.20 - Step 6: Final answer
x = 303,478.84
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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.