Finding the Fourth Proportional to 399,225.12, 550,911.32 and 227,126.88
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Solution
The fourth proportional to 399,225.12, 550,911.32 and 227,126.88 is: 313,424.09
Step by Step Solution
- Step 1: Write the proportion equation
399,225.12 : 550,911.32 = 227,126.88 : x - Step 2: Convert to fraction form
399,225.12/550,911.32 = 227,126.88/x - Step 3: Cross multiply
399,225.12x = 550,911.32 × 227,126.88 - Step 4: Simplify right side
399,225.12x = 125,126,769,268.28 - Step 5: Solve for x
x = 125,126,769,268.28/399,225.12 - Step 6: Final answer
x = 313,424.09
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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.