Finding the Fourth Proportional to 249,087.12, 343,738.40 and 141,657.02
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Solution
The fourth proportional to 249,087.12, 343,738.40 and 141,657.02 is: 195,485.65
Step by Step Solution
- Step 1: Write the proportion equation
249,087.12 : 343,738.40 = 141,657.02 : x - Step 2: Convert to fraction form
249,087.12/343,738.40 = 141,657.02/x - Step 3: Cross multiply
249,087.12x = 343,738.40 × 141,657.02 - Step 4: Simplify right side
249,087.12x = 48,692,957,403.57 - Step 5: Solve for x
x = 48,692,957,403.57/249,087.12 - Step 6: Final answer
x = 195,485.65
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1.5x scale
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.