Finding the Fourth Proportional to 393,294.56, 542,438.13 and 269,189.09
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Solution
The fourth proportional to 393,294.56, 542,438.13 and 269,189.09 is: 371,269.88
Step by Step Solution
- Step 1: Write the proportion equation
393,294.56 : 542,438.13 = 269,189.09 : x - Step 2: Convert to fraction form
393,294.56/542,438.13 = 269,189.09/x - Step 3: Cross multiply
393,294.56x = 542,438.13 × 269,189.09 - Step 4: Simplify right side
393,294.56x = 146,018,423,883.81 - Step 5: Solve for x
x = 146,018,423,883.81/393,294.56 - Step 6: Final answer
x = 371,269.88
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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.