Finding the Fourth Proportional to 426,043.92, 638,978.40 and 201,308.88
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Solution
The fourth proportional to 426,043.92, 638,978.40 and 201,308.88 is: 301,921.99
Step by Step Solution
- Step 1: Write the proportion equation
426,043.92 : 638,978.40 = 201,308.88 : x - Step 2: Convert to fraction form
426,043.92/638,978.40 = 201,308.88/x - Step 3: Cross multiply
426,043.92x = 638,978.40 × 201,308.88 - Step 4: Simplify right side
426,043.92x = 128,632,026,048.19 - Step 5: Solve for x
x = 128,632,026,048.19/426,043.92 - Step 6: Final answer
x = 301,921.99
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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.