Finding the Fourth Proportional to 283,687.80, 391,487.22 and 156,363.09
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Solution
The fourth proportional to 283,687.80, 391,487.22 and 156,363.09 is: 215,779.99
Step by Step Solution
- Step 1: Write the proportion equation
283,687.80 : 391,487.22 = 156,363.09 : x - Step 2: Convert to fraction form
283,687.80/391,487.22 = 156,363.09/x - Step 3: Cross multiply
283,687.80x = 391,487.22 × 156,363.09 - Step 4: Simplify right side
283,687.80x = 61,214,151,414.71 - Step 5: Solve for x
x = 61,214,151,414.71/283,687.80 - Step 6: Final answer
x = 215,779.99
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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.