Finding the Fourth Proportional to 398,523.50, 549,955.33 and 217,236.99
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Solution
The fourth proportional to 398,523.50, 549,955.33 and 217,236.99 is: 299,783.18
Step by Step Solution
- Step 1: Write the proportion equation
398,523.50 : 549,955.33 = 217,236.99 : x - Step 2: Convert to fraction form
398,523.50/549,955.33 = 217,236.99/x - Step 3: Cross multiply
398,523.50x = 549,955.33 × 217,236.99 - Step 4: Simplify right side
398,523.50x = 119,470,639,980.56 - Step 5: Solve for x
x = 119,470,639,980.56/398,523.50 - Step 6: Final answer
x = 299,783.18
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.