Finding the Fourth Proportional to 263,281.13, 394,962.68 and 85,746.84
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Solution
The fourth proportional to 263,281.13, 394,962.68 and 85,746.84 is: 128,633.60
Step by Step Solution
- Step 1: Write the proportion equation
263,281.13 : 394,962.68 = 85,746.84 : x - Step 2: Convert to fraction form
263,281.13/394,962.68 = 85,746.84/x - Step 3: Cross multiply
263,281.13x = 394,962.68 × 85,746.84 - Step 4: Simplify right side
263,281.13x = 33,866,799,324.38 - Step 5: Solve for x
x = 33,866,799,324.38/263,281.13 - Step 6: Final answer
x = 128,633.60
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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.