Finding the Fourth Proportional to 210,783.97, 290,888.79 and 115,290.66
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Solution
The fourth proportional to 210,783.97, 290,888.79 and 115,290.66 is: 159,104.89
Step by Step Solution
- Step 1: Write the proportion equation
210,783.97 : 290,888.79 = 115,290.66 : x - Step 2: Convert to fraction form
210,783.97/290,888.79 = 115,290.66/x - Step 3: Cross multiply
210,783.97x = 290,888.79 × 115,290.66 - Step 4: Simplify right side
210,783.97x = 33,536,760,585.70 - Step 5: Solve for x
x = 33,536,760,585.70/210,783.97 - Step 6: Final answer
x = 159,104.89
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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.