Finding the Fourth Proportional to 280,636.45, 387,272.29 and 159,775.99
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Solution
The fourth proportional to 280,636.45, 387,272.29 and 159,775.99 is: 220,487.45
Step by Step Solution
- Step 1: Write the proportion equation
280,636.45 : 387,272.29 = 159,775.99 : x - Step 2: Convert to fraction form
280,636.45/387,272.29 = 159,775.99/x - Step 3: Cross multiply
280,636.45x = 387,272.29 × 159,775.99 - Step 4: Simplify right side
280,636.45x = 61,876,814,644.68 - Step 5: Solve for x
x = 61,876,814,644.68/280,636.45 - Step 6: Final answer
x = 220,487.45
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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.