Finding the Fourth Proportional to 387,939.08, 535,293.36 and 218,163.08
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Solution
The fourth proportional to 387,939.08, 535,293.36 and 218,163.08 is: 301,029.86
Step by Step Solution
- Step 1: Write the proportion equation
387,939.08 : 535,293.36 = 218,163.08 : x - Step 2: Convert to fraction form
387,939.08/535,293.36 = 218,163.08/x - Step 3: Cross multiply
387,939.08x = 535,293.36 × 218,163.08 - Step 4: Simplify right side
387,939.08x = 116,781,248,121.15 - Step 5: Solve for x
x = 116,781,248,121.15/387,939.08 - Step 6: Final answer
x = 301,029.86
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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.