Finding the Fourth Proportional to 431,649.76, 647,450.94 and 132,130.06
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Solution
The fourth proportional to 431,649.76, 647,450.94 and 132,130.06 is: 198,187.84
Step by Step Solution
- Step 1: Write the proportion equation
431,649.76 : 647,450.94 = 132,130.06 : x - Step 2: Convert to fraction form
431,649.76/647,450.94 = 132,130.06/x - Step 3: Cross multiply
431,649.76x = 647,450.94 × 132,130.06 - Step 4: Simplify right side
431,649.76x = 85,547,731,549.26 - Step 5: Solve for x
x = 85,547,731,549.26/431,649.76 - Step 6: Final answer
x = 198,187.84
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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.