Finding the Fourth Proportional to 387,959.76, 535,322.80 and 218,161.08
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Solution
The fourth proportional to 387,959.76, 535,322.80 and 218,161.08 is: 301,027.61
Step by Step Solution
- Step 1: Write the proportion equation
387,959.76 : 535,322.80 = 218,161.08 : x - Step 2: Convert to fraction form
387,959.76/535,322.80 = 218,161.08/x - Step 3: Cross multiply
387,959.76x = 535,322.80 × 218,161.08 - Step 4: Simplify right side
387,959.76x = 116,786,599,105.82 - Step 5: Solve for x
x = 116,786,599,105.82/387,959.76 - Step 6: Final answer
x = 301,027.61
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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.