Finding the Fourth Proportional to 312,363.40, 431,014.99 and 176,394.65
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Solution
The fourth proportional to 312,363.40, 431,014.99 and 176,394.65 is: 243,398.35
Step by Step Solution
- Step 1: Write the proportion equation
312,363.40 : 431,014.99 = 176,394.65 : x - Step 2: Convert to fraction form
312,363.40/431,014.99 = 176,394.65/x - Step 3: Cross multiply
312,363.40x = 431,014.99 × 176,394.65 - Step 4: Simplify right side
312,363.40x = 76,028,737,114.66 - Step 5: Solve for x
x = 76,028,737,114.66/312,363.40 - Step 6: Final answer
x = 243,398.35
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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.