Finding the Fourth Proportional to 256,135.80, 384,203.70 and 131,719.80
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Solution
The fourth proportional to 256,135.80, 384,203.70 and 131,719.80 is: 197,579.70
Step by Step Solution
- Step 1: Write the proportion equation
256,135.80 : 384,203.70 = 131,719.80 : x - Step 2: Convert to fraction form
256,135.80/384,203.70 = 131,719.80/x - Step 3: Cross multiply
256,135.80x = 384,203.70 × 131,719.80 - Step 4: Simplify right side
256,135.80x = 50,607,234,523.26 - Step 5: Solve for x
x = 50,607,234,523.26/256,135.80 - Step 6: Final answer
x = 197,579.70
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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.