Finding the Fourth Proportional to 303,358.80, 455,135.40 and 203,631.60
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Solution
The fourth proportional to 303,358.80, 455,135.40 and 203,631.60 is: 305,512.65
Step by Step Solution
- Step 1: Write the proportion equation
303,358.80 : 455,135.40 = 203,631.60 : x - Step 2: Convert to fraction form
303,358.80/455,135.40 = 203,631.60/x - Step 3: Cross multiply
303,358.80x = 455,135.40 × 203,631.60 - Step 4: Simplify right side
303,358.80x = 92,679,949,718.64 - Step 5: Solve for x
x = 92,679,949,718.64/303,358.80 - Step 6: Final answer
x = 305,512.65
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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.