Finding the Fourth Proportional to 197,778.24, 272,985.12 and 121,322.88
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Solution
The fourth proportional to 197,778.24, 272,985.12 and 121,322.88 is: 167,456.95
Step by Step Solution
- Step 1: Write the proportion equation
197,778.24 : 272,985.12 = 121,322.88 : x - Step 2: Convert to fraction form
197,778.24/272,985.12 = 121,322.88/x - Step 3: Cross multiply
197,778.24x = 272,985.12 × 121,322.88 - Step 4: Simplify right side
197,778.24x = 33,119,340,955.55 - Step 5: Solve for x
x = 33,119,340,955.55/197,778.24 - Step 6: Final answer
x = 167,456.95
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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.