Finding the Fourth Proportional to 398,432.40, 597,988.80 and 161,944.80
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Solution
The fourth proportional to 398,432.40, 597,988.80 and 161,944.80 is: 243,055.48
Step by Step Solution
- Step 1: Write the proportion equation
398,432.40 : 597,988.80 = 161,944.80 : x - Step 2: Convert to fraction form
398,432.40/597,988.80 = 161,944.80/x - Step 3: Cross multiply
398,432.40x = 597,988.80 × 161,944.80 - Step 4: Simplify right side
398,432.40x = 96,841,176,618.24 - Step 5: Solve for x
x = 96,841,176,618.24/398,432.40 - Step 6: Final answer
x = 243,055.48
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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.