Finding the Fourth Proportional to 210,816.32, 290,926.42 and 115,322.99
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Solution
The fourth proportional to 210,816.32, 290,926.42 and 115,322.99 is: 159,145.67
Step by Step Solution
- Step 1: Write the proportion equation
210,816.32 : 290,926.42 = 115,322.99 : x - Step 2: Convert to fraction form
210,816.32/290,926.42 = 115,322.99/x - Step 3: Cross multiply
210,816.32x = 290,926.42 × 115,322.99 - Step 4: Simplify right side
210,816.32x = 33,550,502,881.46 - Step 5: Solve for x
x = 33,550,502,881.46/210,816.32 - Step 6: Final answer
x = 159,145.67
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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.