Finding the Fourth Proportional to 211,912.68, 292,455.90 and 121,297.08
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Solution
The fourth proportional to 211,912.68, 292,455.90 and 121,297.08 is: 167,399.36
Step by Step Solution
- Step 1: Write the proportion equation
211,912.68 : 292,455.90 = 121,297.08 : x - Step 2: Convert to fraction form
211,912.68/292,455.90 = 121,297.08/x - Step 3: Cross multiply
211,912.68x = 292,455.90 × 121,297.08 - Step 4: Simplify right side
211,912.68x = 35,474,046,698.77 - Step 5: Solve for x
x = 35,474,046,698.77/211,912.68 - Step 6: Final answer
x = 167,399.36
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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.