Finding the Fourth Proportional to 286,814.26, 395,813.28 and 157,758.19
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Solution
The fourth proportional to 286,814.26, 395,813.28 and 157,758.19 is: 217,711.58
Step by Step Solution
- Step 1: Write the proportion equation
286,814.26 : 395,813.28 = 157,758.19 : x - Step 2: Convert to fraction form
286,814.26/395,813.28 = 157,758.19/x - Step 3: Cross multiply
286,814.26x = 395,813.28 × 157,758.19 - Step 4: Simplify right side
286,814.26x = 62,442,786,630.76 - Step 5: Solve for x
x = 62,442,786,630.76/286,814.26 - Step 6: Final answer
x = 217,711.58
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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.