Finding the Fourth Proportional to 197,289.42, 272,258.87 and 112,407.09
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Solution
The fourth proportional to 197,289.42, 272,258.87 and 112,407.09 is: 155,121.48
Step by Step Solution
- Step 1: Write the proportion equation
197,289.42 : 272,258.87 = 112,407.09 : x - Step 2: Convert to fraction form
197,289.42/272,258.87 = 112,407.09/x - Step 3: Cross multiply
197,289.42x = 272,258.87 × 112,407.09 - Step 4: Simplify right side
197,289.42x = 30,603,826,741.35 - Step 5: Solve for x
x = 30,603,826,741.35/197,289.42 - Step 6: Final answer
x = 155,121.48
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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.