Finding the Fourth Proportional to 138,274.18, 207,410.11 and 38,434.08
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Solution
The fourth proportional to 138,274.18, 207,410.11 and 38,434.08 is: 57,650.80
Step by Step Solution
- Step 1: Write the proportion equation
138,274.18 : 207,410.11 = 38,434.08 : x - Step 2: Convert to fraction form
138,274.18/207,410.11 = 38,434.08/x - Step 3: Cross multiply
138,274.18x = 207,410.11 × 38,434.08 - Step 4: Simplify right side
138,274.18x = 7,971,617,442.25 - Step 5: Solve for x
x = 7,971,617,442.25/138,274.18 - Step 6: Final answer
x = 57,650.80
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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.