Finding the Fourth Proportional to 289,405.39, 399,026.55 and 212,690.92
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Solution
The fourth proportional to 289,405.39, 399,026.55 and 212,690.92 is: 293,254.12
Step by Step Solution
- Step 1: Write the proportion equation
289,405.39 : 399,026.55 = 212,690.92 : x - Step 2: Convert to fraction form
289,405.39/399,026.55 = 212,690.92/x - Step 3: Cross multiply
289,405.39x = 399,026.55 × 212,690.92 - Step 4: Simplify right side
289,405.39x = 84,869,324,023.93 - Step 5: Solve for x
x = 84,869,324,023.93/289,405.39 - Step 6: Final answer
x = 293,254.12
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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.