Finding the Fourth Proportional to 311,559.15, 429,951.84 and 168,319.14
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Solution
The fourth proportional to 311,559.15, 429,951.84 and 168,319.14 is: 232,280.53
Step by Step Solution
- Step 1: Write the proportion equation
311,559.15 : 429,951.84 = 168,319.14 : x - Step 2: Convert to fraction form
311,559.15/429,951.84 = 168,319.14/x - Step 3: Cross multiply
311,559.15x = 429,951.84 × 168,319.14 - Step 4: Simplify right side
311,559.15x = 72,369,123,950.22 - Step 5: Solve for x
x = 72,369,123,950.22/311,559.15 - Step 6: Final answer
x = 232,280.53
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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.