Finding the Fourth Proportional to 286,813.26, 395,811.90 and 157,757.19
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Solution
The fourth proportional to 286,813.26, 395,811.90 and 157,757.19 is: 217,710.20
Step by Step Solution
- Step 1: Write the proportion equation
286,813.26 : 395,811.90 = 157,757.19 : x - Step 2: Convert to fraction form
286,813.26/395,811.90 = 157,757.19/x - Step 3: Cross multiply
286,813.26x = 395,811.90 × 157,757.19 - Step 4: Simplify right side
286,813.26x = 62,442,173,112.56 - Step 5: Solve for x
x = 62,442,173,112.56/286,813.26 - Step 6: Final answer
x = 217,710.20
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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.