Finding the Fourth Proportional to 202,980.12, 280,380.30 and 155,816.28
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Solution
The fourth proportional to 202,980.12, 280,380.30 and 155,816.28 is: 215,231.99
Step by Step Solution
- Step 1: Write the proportion equation
202,980.12 : 280,380.30 = 155,816.28 : x - Step 2: Convert to fraction form
202,980.12/280,380.30 = 155,816.28/x - Step 3: Cross multiply
202,980.12x = 280,380.30 × 155,816.28 - Step 4: Simplify right side
202,980.12x = 43,687,815,331.28 - Step 5: Solve for x
x = 43,687,815,331.28/202,980.12 - Step 6: Final answer
x = 215,231.99
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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.