Finding the Fourth Proportional to 216,660.24, 298,952.40 and 121,167.60
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Solution
The fourth proportional to 216,660.24, 298,952.40 and 121,167.60 is: 167,189.63
Step by Step Solution
- Step 1: Write the proportion equation
216,660.24 : 298,952.40 = 121,167.60 : x - Step 2: Convert to fraction form
216,660.24/298,952.40 = 121,167.60/x - Step 3: Cross multiply
216,660.24x = 298,952.40 × 121,167.60 - Step 4: Simplify right side
216,660.24x = 36,223,344,822.24 - Step 5: Solve for x
x = 36,223,344,822.24/216,660.24 - Step 6: Final answer
x = 167,189.63
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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.