Finding the Fourth Proportional to 419,861.43, 629,792.16 and 139,378.68
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Solution
The fourth proportional to 419,861.43, 629,792.16 and 139,378.68 is: 209,068.02
Step by Step Solution
- Step 1: Write the proportion equation
419,861.43 : 629,792.16 = 139,378.68 : x - Step 2: Convert to fraction form
419,861.43/629,792.16 = 139,378.68/x - Step 3: Cross multiply
419,861.43x = 629,792.16 × 139,378.68 - Step 4: Simplify right side
419,861.43x = 87,779,599,935.15 - Step 5: Solve for x
x = 87,779,599,935.15/419,861.43 - Step 6: Final answer
x = 209,068.02
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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.