Finding the Fourth Proportional to 309,823.17, 427,214.46 and 214,163.79
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Solution
The fourth proportional to 309,823.17, 427,214.46 and 214,163.79 is: 295,309.96
Step by Step Solution
- Step 1: Write the proportion equation
309,823.17 : 427,214.46 = 214,163.79 : x - Step 2: Convert to fraction form
309,823.17/427,214.46 = 214,163.79/x - Step 3: Cross multiply
309,823.17x = 427,214.46 × 214,163.79 - Step 4: Simplify right side
309,823.17x = 91,493,867,896.40 - Step 5: Solve for x
x = 91,493,867,896.40/309,823.17 - Step 6: Final answer
x = 295,309.96
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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.