Finding the Fourth Proportional to 230,721.78, 318,408.12 and 135,259.14
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Solution
The fourth proportional to 230,721.78, 318,408.12 and 135,259.14 is: 186,664.69
Step by Step Solution
- Step 1: Write the proportion equation
230,721.78 : 318,408.12 = 135,259.14 : x - Step 2: Convert to fraction form
230,721.78/318,408.12 = 135,259.14/x - Step 3: Cross multiply
230,721.78x = 318,408.12 × 135,259.14 - Step 4: Simplify right side
230,721.78x = 43,067,608,480.22 - Step 5: Solve for x
x = 43,067,608,480.22/230,721.78 - Step 6: Final answer
x = 186,664.69
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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.