Finding the Fourth Proportional to 280,639.76, 387,168.18 and 207,228.08
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Solution
The fourth proportional to 280,639.76, 387,168.18 and 207,228.08 is: 285,890.06
Step by Step Solution
- Step 1: Write the proportion equation
280,639.76 : 387,168.18 = 207,228.08 : x - Step 2: Convert to fraction form
280,639.76/387,168.18 = 207,228.08/x - Step 3: Cross multiply
280,639.76x = 387,168.18 × 207,228.08 - Step 4: Simplify right side
280,639.76x = 80,232,118,578.49 - Step 5: Solve for x
x = 80,232,118,578.49/280,639.76 - Step 6: Final answer
x = 285,890.06
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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.