Finding the Fourth Proportional to 399,323.21, 551,077.37 and 218,046.62
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Solution
The fourth proportional to 399,323.21, 551,077.37 and 218,046.62 is: 300,910.53
Step by Step Solution
- Step 1: Write the proportion equation
399,323.21 : 551,077.37 = 218,046.62 : x - Step 2: Convert to fraction form
399,323.21/551,077.37 = 218,046.62/x - Step 3: Cross multiply
399,323.21x = 551,077.37 × 218,046.62 - Step 4: Simplify right side
399,323.21x = 120,160,558,992.13 - Step 5: Solve for x
x = 120,160,558,992.13/399,323.21 - Step 6: Final answer
x = 300,910.53
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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.