Finding the Fourth Proportional to 381,689.20, 572,533.80 and 329,201.20
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Solution
The fourth proportional to 381,689.20, 572,533.80 and 329,201.20 is: 493,801.80
Step by Step Solution
- Step 1: Write the proportion equation
381,689.20 : 572,533.80 = 329,201.20 : x - Step 2: Convert to fraction form
381,689.20/572,533.80 = 329,201.20/x - Step 3: Cross multiply
381,689.20x = 572,533.80 × 329,201.20 - Step 4: Simplify right side
381,689.20x = 188,478,814,000.56 - Step 5: Solve for x
x = 188,478,814,000.56/381,689.20 - Step 6: Final answer
x = 493,801.80
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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.