Finding the Fourth Proportional to 289,381.87, 399,349.78 and 160,323.09
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Solution
The fourth proportional to 289,381.87, 399,349.78 and 160,323.09 is: 221,247.41
Step by Step Solution
- Step 1: Write the proportion equation
289,381.87 : 399,349.78 = 160,323.09 : x - Step 2: Convert to fraction form
289,381.87/399,349.78 = 160,323.09/x - Step 3: Cross multiply
289,381.87x = 399,349.78 × 160,323.09 - Step 4: Simplify right side
289,381.87x = 64,024,988,822.05 - Step 5: Solve for x
x = 64,024,988,822.05/289,381.87 - Step 6: Final answer
x = 221,247.41
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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.