Finding the Fourth Proportional to 312,264.18, 430,744.69 and 187,998.65
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Solution
The fourth proportional to 312,264.18, 430,744.69 and 187,998.65 is: 259,329.84
Step by Step Solution
- Step 1: Write the proportion equation
312,264.18 : 430,744.69 = 187,998.65 : x - Step 2: Convert to fraction form
312,264.18/430,744.69 = 187,998.65/x - Step 3: Cross multiply
312,264.18x = 430,744.69 × 187,998.65 - Step 4: Simplify right side
312,264.18x = 80,979,419,911.24 - Step 5: Solve for x
x = 80,979,419,911.24/312,264.18 - Step 6: Final answer
x = 259,329.84
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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.