Finding the Fourth Proportional to 210,942.76, 291,099.28 and 115,449.23
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Solution
The fourth proportional to 210,942.76, 291,099.28 and 115,449.23 is: 159,318.99
Step by Step Solution
- Step 1: Write the proportion equation
210,942.76 : 291,099.28 = 115,449.23 : x - Step 2: Convert to fraction form
210,942.76/291,099.28 = 115,449.23/x - Step 3: Cross multiply
210,942.76x = 291,099.28 × 115,449.23 - Step 4: Simplify right side
210,942.76x = 33,607,187,729.55 - Step 5: Solve for x
x = 33,607,187,729.55/210,942.76 - Step 6: Final answer
x = 159,318.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.