Finding the Fourth Proportional to 326,753.99, 489,421.21 and 157,920.23
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Solution
The fourth proportional to 326,753.99, 489,421.21 and 157,920.23 is: 236,537.31
Step by Step Solution
- Step 1: Write the proportion equation
326,753.99 : 489,421.21 = 157,920.23 : x - Step 2: Convert to fraction form
326,753.99/489,421.21 = 157,920.23/x - Step 3: Cross multiply
326,753.99x = 489,421.21 × 157,920.23 - Step 4: Simplify right side
326,753.99x = 77,289,510,050.08 - Step 5: Solve for x
x = 77,289,510,050.08/326,753.99 - Step 6: Final answer
x = 236,537.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.