Finding the Fourth Proportional to 399,805.71, 551,716.91 and 218,516.19
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Solution
The fourth proportional to 399,805.71, 551,716.91 and 218,516.19 is: 301,544.16
Step by Step Solution
- Step 1: Write the proportion equation
399,805.71 : 551,716.91 = 218,516.19 : x - Step 2: Convert to fraction form
399,805.71/551,716.91 = 218,516.19/x - Step 3: Cross multiply
399,805.71x = 551,716.91 × 218,516.19 - Step 4: Simplify right side
399,805.71x = 120,559,076,039.19 - Step 5: Solve for x
x = 120,559,076,039.19/399,805.71 - Step 6: Final answer
x = 301,544.16
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.