Finding the Fourth Proportional to 210,861.36, 290,995.60 and 115,365.88
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Solution
The fourth proportional to 210,861.36, 290,995.60 and 115,365.88 is: 159,208.70
Step by Step Solution
- Step 1: Write the proportion equation
210,861.36 : 290,995.60 = 115,365.88 : x - Step 2: Convert to fraction form
210,861.36/290,995.60 = 115,365.88/x - Step 3: Cross multiply
210,861.36x = 290,995.60 × 115,365.88 - Step 4: Simplify right side
210,861.36x = 33,570,963,470.13 - Step 5: Solve for x
x = 33,570,963,470.13/210,861.36 - Step 6: Final answer
x = 159,208.70
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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.