Finding the Fourth Proportional to 398,055.18, 596,971.87 and 131,836.54
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Solution
The fourth proportional to 398,055.18, 596,971.87 and 131,836.54 is: 197,718.08
Step by Step Solution
- Step 1: Write the proportion equation
398,055.18 : 596,971.87 = 131,836.54 : x - Step 2: Convert to fraction form
398,055.18/596,971.87 = 131,836.54/x - Step 3: Cross multiply
398,055.18x = 596,971.87 × 131,836.54 - Step 4: Simplify right side
398,055.18x = 78,702,705,818.13 - Step 5: Solve for x
x = 78,702,705,818.13/398,055.18 - Step 6: Final answer
x = 197,718.08
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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.