Finding the Fourth Proportional to 216,740.87, 299,090.37 and 121,229.12
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Solution
The fourth proportional to 216,740.87, 299,090.37 and 121,229.12 is: 167,289.46
Step by Step Solution
- Step 1: Write the proportion equation
216,740.87 : 299,090.37 = 121,229.12 : x - Step 2: Convert to fraction form
216,740.87/299,090.37 = 121,229.12/x - Step 3: Cross multiply
216,740.87x = 299,090.37 × 121,229.12 - Step 4: Simplify right side
216,740.87x = 36,258,462,355.57 - Step 5: Solve for x
x = 36,258,462,355.57/216,740.87 - Step 6: Final answer
x = 167,289.46
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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.