Finding the Fourth Proportional to 648,121.80, 972,182.70 and 254,137.80
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Solution
The fourth proportional to 648,121.80, 972,182.70 and 254,137.80 is: 381,206.70
Step by Step Solution
- Step 1: Write the proportion equation
648,121.80 : 972,182.70 = 254,137.80 : x - Step 2: Convert to fraction form
648,121.80/972,182.70 = 254,137.80/x - Step 3: Cross multiply
648,121.80x = 972,182.70 × 254,137.80 - Step 4: Simplify right side
648,121.80x = 247,068,372,576.06 - Step 5: Solve for x
x = 247,068,372,576.06/648,121.80 - Step 6: Final answer
x = 381,206.70
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Similar ratio
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1.5x scale
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.