Finding the Fourth Proportional to 356,138.55, 491,518.14 and 203,141.70
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Solution
The fourth proportional to 356,138.55, 491,518.14 and 203,141.70 is: 280,362.32
Step by Step Solution
- Step 1: Write the proportion equation
356,138.55 : 491,518.14 = 203,141.70 : x - Step 2: Convert to fraction form
356,138.55/491,518.14 = 203,141.70/x - Step 3: Cross multiply
356,138.55x = 491,518.14 × 203,141.70 - Step 4: Simplify right side
356,138.55x = 99,847,830,540.44 - Step 5: Solve for x
x = 99,847,830,540.44/356,138.55 - Step 6: Final answer
x = 280,362.32
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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.