Finding the Fourth Proportional to 286,910.40, 430,414.74 and 87,250.62
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Solution
The fourth proportional to 286,910.40, 430,414.74 and 87,250.62 is: 130,890.87
Step by Step Solution
- Step 1: Write the proportion equation
286,910.40 : 430,414.74 = 87,250.62 : x - Step 2: Convert to fraction form
286,910.40/430,414.74 = 87,250.62/x - Step 3: Cross multiply
286,910.40x = 430,414.74 × 87,250.62 - Step 4: Simplify right side
286,910.40x = 37,553,952,922.14 - Step 5: Solve for x
x = 37,553,952,922.14/286,910.40 - Step 6: Final answer
x = 130,890.87
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.