Finding the Fourth Proportional to 399,013.20, 550,647.72 and 226,959.12
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Solution
The fourth proportional to 399,013.20, 550,647.72 and 226,959.12 is: 313,208.99
Step by Step Solution
- Step 1: Write the proportion equation
399,013.20 : 550,647.72 = 226,959.12 : x - Step 2: Convert to fraction form
399,013.20/550,647.72 = 226,959.12/x - Step 3: Cross multiply
399,013.20x = 550,647.72 × 226,959.12 - Step 4: Simplify right side
399,013.20x = 124,974,521,961.21 - Step 5: Solve for x
x = 124,974,521,961.21/399,013.20 - Step 6: Final answer
x = 313,208.99
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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.