Finding the Fourth Proportional to 203,490.10, 305,235.15 and 132,631.30
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Solution
The fourth proportional to 203,490.10, 305,235.15 and 132,631.30 is: 198,946.95
Step by Step Solution
- Step 1: Write the proportion equation
203,490.10 : 305,235.15 = 132,631.30 : x - Step 2: Convert to fraction form
203,490.10/305,235.15 = 132,631.30/x - Step 3: Cross multiply
203,490.10x = 305,235.15 × 132,631.30 - Step 4: Simplify right side
203,490.10x = 40,483,734,750.20 - Step 5: Solve for x
x = 40,483,734,750.20/203,490.10 - Step 6: Final answer
x = 198,946.95
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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.