Finding the Fourth Proportional to 245,587.09, 338,906.80 and 138,157.09
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Solution
The fourth proportional to 245,587.09, 338,906.80 and 138,157.09 is: 190,654.88
Step by Step Solution
- Step 1: Write the proportion equation
245,587.09 : 338,906.80 = 138,157.09 : x - Step 2: Convert to fraction form
245,587.09/338,906.80 = 138,157.09/x - Step 3: Cross multiply
245,587.09x = 338,906.80 × 138,157.09 - Step 4: Simplify right side
245,587.09x = 46,822,377,269.21 - Step 5: Solve for x
x = 46,822,377,269.21/245,587.09 - Step 6: Final answer
x = 190,654.88
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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.