Finding the Fourth Proportional to 381,420.12, 572,212.21 and 128,706.88
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Solution
The fourth proportional to 381,420.12, 572,212.21 and 128,706.88 is: 193,088.00
Step by Step Solution
- Step 1: Write the proportion equation
381,420.12 : 572,212.21 = 128,706.88 : x - Step 2: Convert to fraction form
381,420.12/572,212.21 = 128,706.88/x - Step 3: Cross multiply
381,420.12x = 572,212.21 × 128,706.88 - Step 4: Simplify right side
381,420.12x = 73,647,648,247.00 - Step 5: Solve for x
x = 73,647,648,247.00/381,420.12 - Step 6: Final answer
x = 193,088.00
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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.