Finding the Fourth Proportional to 290,000.16, 399,969.36 and 239,611.68
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Solution
The fourth proportional to 290,000.16, 399,969.36 and 239,611.68 is: 330,473.37
Step by Step Solution
- Step 1: Write the proportion equation
290,000.16 : 399,969.36 = 239,611.68 : x - Step 2: Convert to fraction form
290,000.16/399,969.36 = 239,611.68/x - Step 3: Cross multiply
290,000.16x = 399,969.36 × 239,611.68 - Step 4: Simplify right side
290,000.16x = 95,837,330,298.12 - Step 5: Solve for x
x = 95,837,330,298.12/290,000.16 - Step 6: Final answer
x = 330,473.37
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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.