Finding the Fourth Proportional to 286,869.28, 395,877.41 and 157,804.97
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Solution
The fourth proportional to 286,869.28, 395,877.41 and 157,804.97 is: 217,769.65
Step by Step Solution
- Step 1: Write the proportion equation
286,869.28 : 395,877.41 = 157,804.97 : x - Step 2: Convert to fraction form
286,869.28/395,877.41 = 157,804.97/x - Step 3: Cross multiply
286,869.28x = 395,877.41 × 157,804.97 - Step 4: Simplify right side
286,869.28x = 62,471,422,414.22 - Step 5: Solve for x
x = 62,471,422,414.22/286,869.28 - Step 6: Final answer
x = 217,769.65
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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.