Finding the Fourth Proportional to 457,272.18, 686,351.79 and 220,780.98
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Solution
The fourth proportional to 457,272.18, 686,351.79 and 220,780.98 is: 331,385.61
Step by Step Solution
- Step 1: Write the proportion equation
457,272.18 : 686,351.79 = 220,780.98 : x - Step 2: Convert to fraction form
457,272.18/686,351.79 = 220,780.98/x - Step 3: Cross multiply
457,272.18x = 686,351.79 × 220,780.98 - Step 4: Simplify right side
457,272.18x = 151,533,420,820.95 - Step 5: Solve for x
x = 151,533,420,820.95/457,272.18 - Step 6: Final answer
x = 331,385.61
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.