Finding the Fourth Proportional to 395,430.86, 545,691.80 and 214,138.62
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Solution
The fourth proportional to 395,430.86, 545,691.80 and 214,138.62 is: 295,509.79
Step by Step Solution
- Step 1: Write the proportion equation
395,430.86 : 545,691.80 = 214,138.62 : x - Step 2: Convert to fraction form
395,430.86/545,691.80 = 214,138.62/x - Step 3: Cross multiply
395,430.86x = 545,691.80 × 214,138.62 - Step 4: Simplify right side
395,430.86x = 116,853,689,532.66 - Step 5: Solve for x
x = 116,853,689,532.66/395,430.86 - Step 6: Final answer
x = 295,509.79
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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.