Finding the Fourth Proportional to 289,859.15, 399,997.53 and 160,796.99
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Solution
The fourth proportional to 289,859.15, 399,997.53 and 160,796.99 is: 221,895.35
Step by Step Solution
- Step 1: Write the proportion equation
289,859.15 : 399,997.53 = 160,796.99 : x - Step 2: Convert to fraction form
289,859.15/399,997.53 = 160,796.99/x - Step 3: Cross multiply
289,859.15x = 399,997.53 × 160,796.99 - Step 4: Simplify right side
289,859.15x = 64,318,398,831.43 - Step 5: Solve for x
x = 64,318,398,831.43/289,859.15 - Step 6: Final answer
x = 221,895.35
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1.5x scale
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.