Finding the Fourth Proportional to 256,116.76, 384,232.26 and 78,641.70
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Solution
The fourth proportional to 256,116.76, 384,232.26 and 78,641.70 is: 117,980.09
Step by Step Solution
- Step 1: Write the proportion equation
256,116.76 : 384,232.26 = 78,641.70 : x - Step 2: Convert to fraction form
256,116.76/384,232.26 = 78,641.70/x - Step 3: Cross multiply
256,116.76x = 384,232.26 × 78,641.70 - Step 4: Simplify right side
256,116.76x = 30,216,678,121.24 - Step 5: Solve for x
x = 30,216,678,121.24/256,116.76 - Step 6: Final answer
x = 117,980.09
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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.