Finding the Fourth Proportional to 431,430.03, 647,145.05 and 131,910.62
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Solution
The fourth proportional to 431,430.03, 647,145.05 and 131,910.62 is: 197,865.92
Step by Step Solution
- Step 1: Write the proportion equation
431,430.03 : 647,145.05 = 131,910.62 : x - Step 2: Convert to fraction form
431,430.03/647,145.05 = 131,910.62/x - Step 3: Cross multiply
431,430.03x = 647,145.05 × 131,910.62 - Step 4: Simplify right side
431,430.03x = 85,365,300,880.15 - Step 5: Solve for x
x = 85,365,300,880.15/431,430.03 - Step 6: Final answer
x = 197,865.92
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Similar ratio
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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.