Finding the Fourth Proportional to 371,421.40, 557,132.10 and 134,771.80
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Solution
The fourth proportional to 371,421.40, 557,132.10 and 134,771.80 is: 202,157.70
Step by Step Solution
- Step 1: Write the proportion equation
371,421.40 : 557,132.10 = 134,771.80 : x - Step 2: Convert to fraction form
371,421.40/557,132.10 = 134,771.80/x - Step 3: Cross multiply
371,421.40x = 557,132.10 × 134,771.80 - Step 4: Simplify right side
371,421.40x = 75,085,695,954.78 - Step 5: Solve for x
x = 75,085,695,954.78/371,421.40 - Step 6: Final answer
x = 202,157.70
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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.