Finding the Fourth Proportional to 286,815.26, 395,814.66 and 157,759.10
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Solution
The fourth proportional to 286,815.26, 395,814.66 and 157,759.10 is: 217,712.84
Step by Step Solution
- Step 1: Write the proportion equation
286,815.26 : 395,814.66 = 157,759.10 : x - Step 2: Convert to fraction form
286,815.26/395,814.66 = 157,759.10/x - Step 3: Cross multiply
286,815.26x = 395,814.66 × 157,759.10 - Step 4: Simplify right side
286,815.26x = 62,443,364,528.41 - Step 5: Solve for x
x = 62,443,364,528.41/286,815.26 - Step 6: Final answer
x = 217,712.84
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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.