Finding the Fourth Proportional to 280,149.12, 386,624.05 and 159,301.65
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Solution
The fourth proportional to 280,149.12, 386,624.05 and 159,301.65 is: 219,846.66
Step by Step Solution
- Step 1: Write the proportion equation
280,149.12 : 386,624.05 = 159,301.65 : x - Step 2: Convert to fraction form
280,149.12/386,624.05 = 159,301.65/x - Step 3: Cross multiply
280,149.12x = 386,624.05 × 159,301.65 - Step 4: Simplify right side
280,149.12x = 61,589,849,094.68 - Step 5: Solve for x
x = 61,589,849,094.68/280,149.12 - Step 6: Final answer
x = 219,846.66
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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.