Finding the Fourth Proportional to 317,796.68, 476,694.58 and 81,139.40
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Solution
The fourth proportional to 317,796.68, 476,694.58 and 81,139.40 is: 121,708.99
Step by Step Solution
- Step 1: Write the proportion equation
317,796.68 : 476,694.58 = 81,139.40 : x - Step 2: Convert to fraction form
317,796.68/476,694.58 = 81,139.40/x - Step 3: Cross multiply
317,796.68x = 476,694.58 × 81,139.40 - Step 4: Simplify right side
317,796.68x = 38,678,712,204.45 - Step 5: Solve for x
x = 38,678,712,204.45/317,796.68 - Step 6: Final answer
x = 121,708.99
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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.