Finding the Fourth Proportional to 192,628.80, 288,943.20 and 129,643.20
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Solution
The fourth proportional to 192,628.80, 288,943.20 and 129,643.20 is: 194,464.80
Step by Step Solution
- Step 1: Write the proportion equation
192,628.80 : 288,943.20 = 129,643.20 : x - Step 2: Convert to fraction form
192,628.80/288,943.20 = 129,643.20/x - Step 3: Cross multiply
192,628.80x = 288,943.20 × 129,643.20 - Step 4: Simplify right side
192,628.80x = 37,459,521,066.24 - Step 5: Solve for x
x = 37,459,521,066.24/192,628.80 - Step 6: Final answer
x = 194,464.80
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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.