Finding the Fourth Proportional to 209,325.60, 313,930.80 and 84,679.20
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Solution
The fourth proportional to 209,325.60, 313,930.80 and 84,679.20 is: 126,995.50
Step by Step Solution
- Step 1: Write the proportion equation
209,325.60 : 313,930.80 = 84,679.20 : x - Step 2: Convert to fraction form
209,325.60/313,930.80 = 84,679.20/x - Step 3: Cross multiply
209,325.60x = 313,930.80 × 84,679.20 - Step 4: Simplify right side
209,325.60x = 26,583,408,999.36 - Step 5: Solve for x
x = 26,583,408,999.36/209,325.60 - Step 6: Final answer
x = 126,995.50
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1.5x scale
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.