Finding the Fourth Proportional to 311,808.14, 430,307.80 and 173,999.12
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Solution
The fourth proportional to 311,808.14, 430,307.80 and 173,999.12 is: 240,125.80
Step by Step Solution
- Step 1: Write the proportion equation
311,808.14 : 430,307.80 = 173,999.12 : x - Step 2: Convert to fraction form
311,808.14/430,307.80 = 173,999.12/x - Step 3: Cross multiply
311,808.14x = 430,307.80 × 173,999.12 - Step 4: Simplify right side
311,808.14x = 74,873,179,169.91 - Step 5: Solve for x
x = 74,873,179,169.91/311,808.14 - Step 6: Final answer
x = 240,125.80
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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.