Finding the Fourth Proportional to 305,847.80, 458,771.70 and 81,207.80
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Solution
The fourth proportional to 305,847.80, 458,771.70 and 81,207.80 is: 121,811.70
Step by Step Solution
- Step 1: Write the proportion equation
305,847.80 : 458,771.70 = 81,207.80 : x - Step 2: Convert to fraction form
305,847.80/458,771.70 = 81,207.80/x - Step 3: Cross multiply
305,847.80x = 458,771.70 × 81,207.80 - Step 4: Simplify right side
305,847.80x = 37,255,840,459.26 - Step 5: Solve for x
x = 37,255,840,459.26/305,847.80 - Step 6: Final answer
x = 121,811.70
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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.