Finding the Fourth Proportional to 319,364.40, 478,873.80 and 132,394.80
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Solution
The fourth proportional to 319,364.40, 478,873.80 and 132,394.80 is: 198,520.56
Step by Step Solution
- Step 1: Write the proportion equation
319,364.40 : 478,873.80 = 132,394.80 : x - Step 2: Convert to fraction form
319,364.40/478,873.80 = 132,394.80/x - Step 3: Cross multiply
319,364.40x = 478,873.80 × 132,394.80 - Step 4: Simplify right side
319,364.40x = 63,400,400,976.24 - Step 5: Solve for x
x = 63,400,400,976.24/319,364.40 - Step 6: Final answer
x = 198,520.56
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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.