Finding the Fourth Proportional to 395,420.71, 545,677.86 and 214,128.49
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Solution
The fourth proportional to 395,420.71, 545,677.86 and 214,128.49 is: 295,495.84
Step by Step Solution
- Step 1: Write the proportion equation
395,420.71 : 545,677.86 = 214,128.49 : x - Step 2: Convert to fraction form
395,420.71/545,677.86 = 214,128.49/x - Step 3: Cross multiply
395,420.71x = 545,677.86 × 214,128.49 - Step 4: Simplify right side
395,420.71x = 116,845,173,760.41 - Step 5: Solve for x
x = 116,845,173,760.41/395,420.71 - Step 6: Final answer
x = 295,495.84
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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.