Finding the Fourth Proportional to 487,688.31, 731,458.53 and 132,729.99
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Solution
The fourth proportional to 487,688.31, 731,458.53 and 132,729.99 is: 199,074.86
Step by Step Solution
- Step 1: Write the proportion equation
487,688.31 : 731,458.53 = 132,729.99 : x - Step 2: Convert to fraction form
487,688.31/731,458.53 = 132,729.99/x - Step 3: Cross multiply
487,688.31x = 731,458.53 × 132,729.99 - Step 4: Simplify right side
487,688.31x = 97,086,483,372.31 - Step 5: Solve for x
x = 97,086,483,372.31/487,688.31 - Step 6: Final answer
x = 199,074.86
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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.