Finding the Fourth Proportional to 431,187.99, 646,781.99 and 131,652.53
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Solution
The fourth proportional to 431,187.99, 646,781.99 and 131,652.53 is: 197,478.79
Step by Step Solution
- Step 1: Write the proportion equation
431,187.99 : 646,781.99 = 131,652.53 : x - Step 2: Convert to fraction form
431,187.99/646,781.99 = 131,652.53/x - Step 3: Cross multiply
431,187.99x = 646,781.99 × 131,652.53 - Step 4: Simplify right side
431,187.99x = 85,150,481,449.76 - Step 5: Solve for x
x = 85,150,481,449.76/431,187.99 - Step 6: Final answer
x = 197,478.79
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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.