Finding the Fourth Proportional to 326,243.20, 489,364.80 and 292,028.80
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Solution
The fourth proportional to 326,243.20, 489,364.80 and 292,028.80 is: 438,043.20
Step by Step Solution
- Step 1: Write the proportion equation
326,243.20 : 489,364.80 = 292,028.80 : x - Step 2: Convert to fraction form
326,243.20/489,364.80 = 292,028.80/x - Step 3: Cross multiply
326,243.20x = 489,364.80 × 292,028.80 - Step 4: Simplify right side
326,243.20x = 142,908,615,306.24 - Step 5: Solve for x
x = 142,908,615,306.24/326,243.20 - Step 6: Final answer
x = 438,043.20
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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.