Finding the Fourth Proportional to 394,400.21, 545,191.70 and 351,801.88
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Solution
The fourth proportional to 394,400.21, 545,191.70 and 351,801.88 is: 486,306.71
Step by Step Solution
- Step 1: Write the proportion equation
394,400.21 : 545,191.70 = 351,801.88 : x - Step 2: Convert to fraction form
394,400.21/545,191.70 = 351,801.88/x - Step 3: Cross multiply
394,400.21x = 545,191.70 × 351,801.88 - Step 4: Simplify right side
394,400.21x = 191,799,464,536.92 - Step 5: Solve for x
x = 191,799,464,536.92/394,400.21 - Step 6: Final answer
x = 486,306.71
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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.