Finding the Fourth Proportional to 207,243.20, 310,864.80 and 135,972.80
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Solution
The fourth proportional to 207,243.20, 310,864.80 and 135,972.80 is: 203,959.20
Step by Step Solution
- Step 1: Write the proportion equation
207,243.20 : 310,864.80 = 135,972.80 : x - Step 2: Convert to fraction form
207,243.20/310,864.80 = 135,972.80/x - Step 3: Cross multiply
207,243.20x = 310,864.80 × 135,972.80 - Step 4: Simplify right side
207,243.20x = 42,269,157,277.44 - Step 5: Solve for x
x = 42,269,157,277.44/207,243.20 - Step 6: Final answer
x = 203,959.20
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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.