Finding the Fourth Proportional to 238,874.33, 329,636.62 and 129,979.09
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Solution
The fourth proportional to 238,874.33, 329,636.62 and 129,979.09 is: 179,365.72
Step by Step Solution
- Step 1: Write the proportion equation
238,874.33 : 329,636.62 = 129,979.09 : x - Step 2: Convert to fraction form
238,874.33/329,636.62 = 129,979.09/x - Step 3: Cross multiply
238,874.33x = 329,636.62 × 129,979.09 - Step 4: Simplify right side
238,874.33x = 42,845,867,248.38 - Step 5: Solve for x
x = 42,845,867,248.38/238,874.33 - Step 6: Final answer
x = 179,365.72
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1.5x scale
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.