Finding the Fourth Proportional to 289,325,308.97, 399,221,596.78 and 170,348,163.68
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Solution
The fourth proportional to 289,325,308.97, 399,221,596.78 and 170,348,163.68 is: 235,052,599.29
Step by Step Solution
- Step 1: Write the proportion equation
289,325,308.97 : 399,221,596.78 = 170,348,163.68 : x - Step 2: Convert to fraction form
289,325,308.97/399,221,596.78 = 170,348,163.68/x - Step 3: Cross multiply
289,325,308.97x = 399,221,596.78 × 170,348,163.68 - Step 4: Simplify right side
289,325,308.97x = 68,006,665,913,442,584 - Step 5: Solve for x
x = 68,006,665,913,442,584/289,325,308.97 - Step 6: Final answer
x = 235,052,599.29
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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.