Finding the Fourth Proportional to 310,550.08, 428,722.08 and 209,108.80
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Solution
The fourth proportional to 310,550.08, 428,722.08 and 209,108.80 is: 288,679.88
Step by Step Solution
- Step 1: Write the proportion equation
310,550.08 : 428,722.08 = 209,108.80 : x - Step 2: Convert to fraction form
310,550.08/428,722.08 = 209,108.80/x - Step 3: Cross multiply
310,550.08x = 428,722.08 × 209,108.80 - Step 4: Simplify right side
310,550.08x = 89,649,559,682.30 - Step 5: Solve for x
x = 89,649,559,682.30/310,550.08 - Step 6: Final answer
x = 288,679.88
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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.