Finding the Fourth Proportional to 289,282,481.77, 399,203,035.06 and 170,212,786.13
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Solution
The fourth proportional to 289,282,481.77, 399,203,035.06 and 170,212,786.13 is: 234,889,649.78
Step by Step Solution
- Step 1: Write the proportion equation
289,282,481.77 : 399,203,035.06 = 170,212,786.13 : x - Step 2: Convert to fraction form
289,282,481.77/399,203,035.06 = 170,212,786.13/x - Step 3: Cross multiply
289,282,481.77x = 399,203,035.06 × 170,212,786.13 - Step 4: Simplify right side
289,282,481.77x = 67,949,460,829,114,672 - Step 5: Solve for x
x = 67,949,460,829,114,672/289,282,481.77 - Step 6: Final answer
x = 234,889,649.78
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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.