Finding the Fourth Proportional to 311,811.08, 430,288.80 and 197,151.44
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Solution
The fourth proportional to 311,811.08, 430,288.80 and 197,151.44 is: 272,062.35
Step by Step Solution
- Step 1: Write the proportion equation
311,811.08 : 430,288.80 = 197,151.44 : x - Step 2: Convert to fraction form
311,811.08/430,288.80 = 197,151.44/x - Step 3: Cross multiply
311,811.08x = 430,288.80 × 197,151.44 - Step 4: Simplify right side
311,811.08x = 84,832,054,384.43 - Step 5: Solve for x
x = 84,832,054,384.43/311,811.08 - Step 6: Final answer
x = 272,062.35
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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.