Finding the Fourth Proportional to 215,625.80, 323,438.70 and 97,430.60
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Solution
The fourth proportional to 215,625.80, 323,438.70 and 97,430.60 is: 146,145.90
Step by Step Solution
- Step 1: Write the proportion equation
215,625.80 : 323,438.70 = 97,430.60 : x - Step 2: Convert to fraction form
215,625.80/323,438.70 = 97,430.60/x - Step 3: Cross multiply
215,625.80x = 323,438.70 × 97,430.60 - Step 4: Simplify right side
215,625.80x = 31,512,826,604.22 - Step 5: Solve for x
x = 31,512,826,604.22/215,625.80 - Step 6: Final answer
x = 146,145.90
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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.