Finding the Fourth Proportional to 287,135.28, 430,702.92 and 76,767.75
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Solution
The fourth proportional to 287,135.28, 430,702.92 and 76,767.75 is: 115,151.63
Step by Step Solution
- Step 1: Write the proportion equation
287,135.28 : 430,702.92 = 76,767.75 : x - Step 2: Convert to fraction form
287,135.28/430,702.92 = 76,767.75/x - Step 3: Cross multiply
287,135.28x = 430,702.92 × 76,767.75 - Step 4: Simplify right side
287,135.28x = 33,064,094,086.83 - Step 5: Solve for x
x = 33,064,094,086.83/287,135.28 - Step 6: Final answer
x = 115,151.63
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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.