Finding the Fourth Proportional to 312,238.18, 430,899.12 and 191,356.12
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Solution
The fourth proportional to 312,238.18, 430,899.12 and 191,356.12 is: 264,077.84
Step by Step Solution
- Step 1: Write the proportion equation
312,238.18 : 430,899.12 = 191,356.12 : x - Step 2: Convert to fraction form
312,238.18/430,899.12 = 191,356.12/x - Step 3: Cross multiply
312,238.18x = 430,899.12 × 191,356.12 - Step 4: Simplify right side
312,238.18x = 82,455,183,714.61 - Step 5: Solve for x
x = 82,455,183,714.61/312,238.18 - Step 6: Final answer
x = 264,077.84
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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.