Finding the Fourth Proportional to 395,421.75, 545,681.21 and 214,133.63
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Solution
The fourth proportional to 395,421.75, 545,681.21 and 214,133.63 is: 295,503.96
Step by Step Solution
- Step 1: Write the proportion equation
395,421.75 : 545,681.21 = 214,133.63 : x - Step 2: Convert to fraction form
395,421.75/545,681.21 = 214,133.63/x - Step 3: Cross multiply
395,421.75x = 545,681.21 × 214,133.63 - Step 4: Simplify right side
395,421.75x = 116,848,694,521.02 - Step 5: Solve for x
x = 116,848,694,521.02/395,421.75 - Step 6: Final answer
x = 295,503.96
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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.