Finding the Fourth Proportional to 289,278.29, 432,158.19 and 187,245.09
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Solution
The fourth proportional to 289,278.29, 432,158.19 and 187,245.09 is: 279,728.91
Step by Step Solution
- Step 1: Write the proportion equation
289,278.29 : 432,158.19 = 187,245.09 : x - Step 2: Convert to fraction form
289,278.29/432,158.19 = 187,245.09/x - Step 3: Cross multiply
289,278.29x = 432,158.19 × 187,245.09 - Step 4: Simplify right side
289,278.29x = 80,919,499,180.79 - Step 5: Solve for x
x = 80,919,499,180.79/289,278.29 - Step 6: Final answer
x = 279,728.91
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.