Finding the Fourth Proportional to 265,742.12, 398,545.26 and 78,709.88
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Solution
The fourth proportional to 265,742.12, 398,545.26 and 78,709.88 is: 118,044.70
Step by Step Solution
- Step 1: Write the proportion equation
265,742.12 : 398,545.26 = 78,709.88 : x - Step 2: Convert to fraction form
265,742.12/398,545.26 = 78,709.88/x - Step 3: Cross multiply
265,742.12x = 398,545.26 × 78,709.88 - Step 4: Simplify right side
265,742.12x = 31,369,449,589.17 - Step 5: Solve for x
x = 31,369,449,589.17/265,742.12 - Step 6: Final answer
x = 118,044.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.