Finding the Fourth Proportional to 259,968.68, 389,966.85 and 82,489.58
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Solution
The fourth proportional to 259,968.68, 389,966.85 and 82,489.58 is: 123,738.75
Step by Step Solution
- Step 1: Write the proportion equation
259,968.68 : 389,966.85 = 82,489.58 : x - Step 2: Convert to fraction form
259,968.68/389,966.85 = 82,489.58/x - Step 3: Cross multiply
259,968.68x = 389,966.85 × 82,489.58 - Step 4: Simplify right side
259,968.68x = 32,168,199,720.59 - Step 5: Solve for x
x = 32,168,199,720.59/259,968.68 - Step 6: Final answer
x = 123,738.75
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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.