Finding the Fourth Proportional to 399,316.77, 551,052.97 and 218,028.14
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Solution
The fourth proportional to 399,316.77, 551,052.97 and 218,028.14 is: 300,876.55
Step by Step Solution
- Step 1: Write the proportion equation
399,316.77 : 551,052.97 = 218,028.14 : x - Step 2: Convert to fraction form
399,316.77/551,052.97 = 218,028.14/x - Step 3: Cross multiply
399,316.77x = 551,052.97 × 218,028.14 - Step 4: Simplify right side
399,316.77x = 120,145,054,090.58 - Step 5: Solve for x
x = 120,145,054,090.58/399,316.77 - Step 6: Final answer
x = 300,876.55
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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.