Finding the Fourth Proportional to 431,193.60, 646,887.36 and 131,649.12
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Solution
The fourth proportional to 431,193.60, 646,887.36 and 131,649.12 is: 197,503.28
Step by Step Solution
- Step 1: Write the proportion equation
431,193.60 : 646,887.36 = 131,649.12 : x - Step 2: Convert to fraction form
431,193.60/646,887.36 = 131,649.12/x - Step 3: Cross multiply
431,193.60x = 646,887.36 × 131,649.12 - Step 4: Simplify right side
431,193.60x = 85,162,151,683.12 - Step 5: Solve for x
x = 85,162,151,683.12/431,193.60 - Step 6: Final answer
x = 197,503.28
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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.