Finding the Fourth Proportional to 419,864.43, 629,796.66 and 139,381.68
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Solution
The fourth proportional to 419,864.43, 629,796.66 and 139,381.68 is: 209,072.52
Step by Step Solution
- Step 1: Write the proportion equation
419,864.43 : 629,796.66 = 139,381.68 : x - Step 2: Convert to fraction form
419,864.43/629,796.66 = 139,381.68/x - Step 3: Cross multiply
419,864.43x = 629,796.66 × 139,381.68 - Step 4: Simplify right side
419,864.43x = 87,782,116,529.19 - Step 5: Solve for x
x = 87,782,116,529.19/419,864.43 - Step 6: Final answer
x = 209,072.52
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.