Finding the Fourth Proportional to 283,638.19, 391,420.70 and 156,313.78
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Solution
The fourth proportional to 283,638.19, 391,420.70 and 156,313.78 is: 215,713.02
Step by Step Solution
- Step 1: Write the proportion equation
283,638.19 : 391,420.70 = 156,313.78 : x - Step 2: Convert to fraction form
283,638.19/391,420.70 = 156,313.78/x - Step 3: Cross multiply
283,638.19x = 391,420.70 × 156,313.78 - Step 4: Simplify right side
283,638.19x = 61,184,449,187.25 - Step 5: Solve for x
x = 61,184,449,187.25/283,638.19 - Step 6: Final answer
x = 215,713.02
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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.