Finding the Fourth Proportional to 279,363.74, 419,111.21 and 79,686.99
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Solution
The fourth proportional to 279,363.74, 419,111.21 and 79,686.99 is: 119,549.20
Step by Step Solution
- Step 1: Write the proportion equation
279,363.74 : 419,111.21 = 79,686.99 : x - Step 2: Convert to fraction form
279,363.74/419,111.21 = 79,686.99/x - Step 3: Cross multiply
279,363.74x = 419,111.21 × 79,686.99 - Step 4: Simplify right side
279,363.74x = 33,397,710,999.38 - Step 5: Solve for x
x = 33,397,710,999.38/279,363.74 - Step 6: Final answer
x = 119,549.20
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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.