Finding the Fourth Proportional to 399,524.21, 551,340.14 and 218,236.19
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Solution
The fourth proportional to 399,524.21, 551,340.14 and 218,236.19 is: 301,164.15
Step by Step Solution
- Step 1: Write the proportion equation
399,524.21 : 551,340.14 = 218,236.19 : x - Step 2: Convert to fraction form
399,524.21/551,340.14 = 218,236.19/x - Step 3: Cross multiply
399,524.21x = 551,340.14 × 218,236.19 - Step 4: Simplify right side
399,524.21x = 120,322,367,699.79 - Step 5: Solve for x
x = 120,322,367,699.79/399,524.21 - Step 6: Final answer
x = 301,164.15
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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.