Finding the Fourth Proportional to 279,985.64, 419,859.99 and 153,589.79
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Solution
The fourth proportional to 279,985.64, 419,859.99 and 153,589.79 is: 230,319.70
Step by Step Solution
- Step 1: Write the proportion equation
279,985.64 : 419,859.99 = 153,589.79 : x - Step 2: Convert to fraction form
279,985.64/419,859.99 = 153,589.79/x - Step 3: Cross multiply
279,985.64x = 419,859.99 × 153,589.79 - Step 4: Simplify right side
279,985.64x = 64,486,208,743.15 - Step 5: Solve for x
x = 64,486,208,743.15/279,985.64 - Step 6: Final answer
x = 230,319.70
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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.