Finding the Fourth Proportional to 309,202.11, 462,869.51 and 279,633.87
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Solution
The fourth proportional to 309,202.11, 462,869.51 and 279,633.87 is: 418,606.43
Step by Step Solution
- Step 1: Write the proportion equation
309,202.11 : 462,869.51 = 279,633.87 : x - Step 2: Convert to fraction form
309,202.11/462,869.51 = 279,633.87/x - Step 3: Cross multiply
309,202.11x = 462,869.51 × 279,633.87 - Step 4: Simplify right side
309,202.11x = 129,433,990,988.13 - Step 5: Solve for x
x = 129,433,990,988.13/309,202.11 - Step 6: Final answer
x = 418,606.43
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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.