Finding the Fourth Proportional to 283,945.12, 391,845.36 and 156,618.88
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Solution
The fourth proportional to 283,945.12, 391,845.36 and 156,618.88 is: 216,134.66
Step by Step Solution
- Step 1: Write the proportion equation
283,945.12 : 391,845.36 = 156,618.88 : x - Step 2: Convert to fraction form
283,945.12/391,845.36 = 156,618.88/x - Step 3: Cross multiply
283,945.12x = 391,845.36 × 156,618.88 - Step 4: Simplify right side
283,945.12x = 61,370,381,416.40 - Step 5: Solve for x
x = 61,370,381,416.40/283,945.12 - Step 6: Final answer
x = 216,134.66
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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.