Finding the Fourth Proportional to 425,620.20, 638,138.70 and 201,088.20
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Solution
The fourth proportional to 425,620.20, 638,138.70 and 201,088.20 is: 301,494.53
Step by Step Solution
- Step 1: Write the proportion equation
425,620.20 : 638,138.70 = 201,088.20 : x - Step 2: Convert to fraction form
425,620.20/638,138.70 = 201,088.20/x - Step 3: Cross multiply
425,620.20x = 638,138.70 × 201,088.20 - Step 4: Simplify right side
425,620.20x = 128,322,162,533.34 - Step 5: Solve for x
x = 128,322,162,533.34/425,620.20 - Step 6: Final answer
x = 301,494.53
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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.