Finding the Fourth Proportional to 245,720.81, 339,105.62 and 138,297.80
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Solution
The fourth proportional to 245,720.81, 339,105.62 and 138,297.80 is: 190,857.09
Step by Step Solution
- Step 1: Write the proportion equation
245,720.81 : 339,105.62 = 138,297.80 : x - Step 2: Convert to fraction form
245,720.81/339,105.62 = 138,297.80/x - Step 3: Cross multiply
245,720.81x = 339,105.62 × 138,297.80 - Step 4: Simplify right side
245,720.81x = 46,897,558,826.62 - Step 5: Solve for x
x = 46,897,558,826.62/245,720.81 - Step 6: Final answer
x = 190,857.09
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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.