Finding the Fourth Proportional to 279,987.74, 419,983.28 and 69,625.68
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Solution
The fourth proportional to 279,987.74, 419,983.28 and 69,625.68 is: 104,438.94
Step by Step Solution
- Step 1: Write the proportion equation
279,987.74 : 419,983.28 = 69,625.68 : x - Step 2: Convert to fraction form
279,987.74/419,983.28 = 69,625.68/x - Step 3: Cross multiply
279,987.74x = 419,983.28 × 69,625.68 - Step 4: Simplify right side
279,987.74x = 29,241,621,458.63 - Step 5: Solve for x
x = 29,241,621,458.63/279,987.74 - Step 6: Final answer
x = 104,438.94
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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.