Finding the Fourth Proportional to 285,202.80, 427,901.40 and 85,528.08
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Solution
The fourth proportional to 285,202.80, 427,901.40 and 85,528.08 is: 128,321.27
Step by Step Solution
- Step 1: Write the proportion equation
285,202.80 : 427,901.40 = 85,528.08 : x - Step 2: Convert to fraction form
285,202.80/427,901.40 = 85,528.08/x - Step 3: Cross multiply
285,202.80x = 427,901.40 × 85,528.08 - Step 4: Simplify right side
285,202.80x = 36,597,585,171.31 - Step 5: Solve for x
x = 36,597,585,171.31/285,202.80 - Step 6: Final answer
x = 128,321.27
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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.