Finding the Fourth Proportional to 212,931.99, 319,397.99 and 55,160.44
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Solution
The fourth proportional to 212,931.99, 319,397.99 and 55,160.44 is: 82,740.66
Step by Step Solution
- Step 1: Write the proportion equation
212,931.99 : 319,397.99 = 55,160.44 : x - Step 2: Convert to fraction form
212,931.99/319,397.99 = 55,160.44/x - Step 3: Cross multiply
212,931.99x = 319,397.99 × 55,160.44 - Step 4: Simplify right side
212,931.99x = 17,618,132,589.22 - Step 5: Solve for x
x = 17,618,132,589.22/212,931.99 - Step 6: Final answer
x = 82,740.66
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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.