Finding the Fourth Proportional to 210,818.19, 290,926.74 and 115,323.75
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Solution
The fourth proportional to 210,818.19, 290,926.74 and 115,323.75 is: 159,145.48
Step by Step Solution
- Step 1: Write the proportion equation
210,818.19 : 290,926.74 = 115,323.75 : x - Step 2: Convert to fraction form
210,818.19/290,926.74 = 115,323.75/x - Step 3: Cross multiply
210,818.19x = 290,926.74 × 115,323.75 - Step 4: Simplify right side
210,818.19x = 33,550,762,415.84 - Step 5: Solve for x
x = 33,550,762,415.84/210,818.19 - Step 6: Final answer
x = 159,145.48
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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.