Finding the Fourth Proportional to 280,706.80, 387,366.12 and 177,396.21
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Solution
The fourth proportional to 280,706.80, 387,366.12 and 177,396.21 is: 244,800.92
Step by Step Solution
- Step 1: Write the proportion equation
280,706.80 : 387,366.12 = 177,396.21 : x - Step 2: Convert to fraction form
280,706.80/387,366.12 = 177,396.21/x - Step 3: Cross multiply
280,706.80x = 387,366.12 × 177,396.21 - Step 4: Simplify right side
280,706.80x = 68,717,281,570.41 - Step 5: Solve for x
x = 68,717,281,570.41/280,706.80 - Step 6: Final answer
x = 244,800.92
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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.