Finding the Fourth Proportional to 319,386.40, 478,906.80 and 132,416.80
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Solution
The fourth proportional to 319,386.40, 478,906.80 and 132,416.80 is: 198,553.56
Step by Step Solution
- Step 1: Write the proportion equation
319,386.40 : 478,906.80 = 132,416.80 : x - Step 2: Convert to fraction form
319,386.40/478,906.80 = 132,416.80/x - Step 3: Cross multiply
319,386.40x = 478,906.80 × 132,416.80 - Step 4: Simplify right side
319,386.40x = 63,415,305,954.24 - Step 5: Solve for x
x = 63,415,305,954.24/319,386.40 - Step 6: Final answer
x = 198,553.56
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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.