Finding the Fourth Proportional to 431,990.06, 648,079.81 and 132,493.10
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Solution
The fourth proportional to 431,990.06, 648,079.81 and 132,493.10 is: 198,768.70
Step by Step Solution
- Step 1: Write the proportion equation
431,990.06 : 648,079.81 = 132,493.10 : x - Step 2: Convert to fraction form
431,990.06/648,079.81 = 132,493.10/x - Step 3: Cross multiply
431,990.06x = 648,079.81 × 132,493.10 - Step 4: Simplify right side
431,990.06x = 85,866,099,502.68 - Step 5: Solve for x
x = 85,866,099,502.68/431,990.06 - Step 6: Final answer
x = 198,768.70
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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.