Finding the Fourth Proportional to 318,982.34, 440,378.90 and 211,697.84
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Solution
The fourth proportional to 318,982.34, 440,378.90 and 211,697.84 is: 292,264.64
Step by Step Solution
- Step 1: Write the proportion equation
318,982.34 : 440,378.90 = 211,697.84 : x - Step 2: Convert to fraction form
318,982.34/440,378.90 = 211,697.84/x - Step 3: Cross multiply
318,982.34x = 440,378.90 × 211,697.84 - Step 4: Simplify right side
318,982.34x = 93,227,258,651.19 - Step 5: Solve for x
x = 93,227,258,651.19/318,982.34 - Step 6: Final answer
x = 292,264.64
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1.5x scale
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.