Finding the Fourth Proportional to 280,636.81, 387,164.12 and 207,225.15
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Solution
The fourth proportional to 280,636.81, 387,164.12 and 207,225.15 is: 285,886.02
Step by Step Solution
- Step 1: Write the proportion equation
280,636.81 : 387,164.12 = 207,225.15 : x - Step 2: Convert to fraction form
280,636.81/387,164.12 = 207,225.15/x - Step 3: Cross multiply
280,636.81x = 387,164.12 × 207,225.15 - Step 4: Simplify right side
280,636.81x = 80,230,141,805.49 - Step 5: Solve for x
x = 80,230,141,805.49/280,636.81 - Step 6: Final answer
x = 285,886.02
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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.