Finding the Fourth Proportional to 278,969.68, 418,219.26 and 121,079.08
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Solution
The fourth proportional to 278,969.68, 418,219.26 and 121,079.08 is: 181,516.51
Step by Step Solution
- Step 1: Write the proportion equation
278,969.68 : 418,219.26 = 121,079.08 : x - Step 2: Convert to fraction form
278,969.68/418,219.26 = 121,079.08/x - Step 3: Cross multiply
278,969.68x = 418,219.26 × 121,079.08 - Step 4: Simplify right side
278,969.68x = 50,637,603,239.08 - Step 5: Solve for x
x = 50,637,603,239.08/278,969.68 - Step 6: Final answer
x = 181,516.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.