Finding the Fourth Proportional to 225,791.68, 338,843.04 and 78,047.68
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Solution
The fourth proportional to 225,791.68, 338,843.04 and 78,047.68 is: 117,125.28
Step by Step Solution
- Step 1: Write the proportion equation
225,791.68 : 338,843.04 = 78,047.68 : x - Step 2: Convert to fraction form
225,791.68/338,843.04 = 78,047.68/x - Step 3: Cross multiply
225,791.68x = 338,843.04 × 78,047.68 - Step 4: Simplify right side
225,791.68x = 26,445,913,156.15 - Step 5: Solve for x
x = 26,445,913,156.15/225,791.68 - Step 6: Final answer
x = 117,125.28
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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.