Finding the Fourth Proportional to 210,840.09, 290,959.18 and 115,346.80
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Solution
The fourth proportional to 210,840.09, 290,959.18 and 115,346.80 is: 159,178.51
Step by Step Solution
- Step 1: Write the proportion equation
210,840.09 : 290,959.18 = 115,346.80 : x - Step 2: Convert to fraction form
210,840.09/290,959.18 = 115,346.80/x - Step 3: Cross multiply
210,840.09x = 290,959.18 × 115,346.80 - Step 4: Simplify right side
210,840.09x = 33,561,210,343.62 - Step 5: Solve for x
x = 33,561,210,343.62/210,840.09 - Step 6: Final answer
x = 159,178.51
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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.