Finding the Fourth Proportional to 280,381.77, 420,259.17 and 147,276.09
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Solution
The fourth proportional to 280,381.77, 420,259.17 and 147,276.09 is: 220,749.47
Step by Step Solution
- Step 1: Write the proportion equation
280,381.77 : 420,259.17 = 147,276.09 : x - Step 2: Convert to fraction form
280,381.77/420,259.17 = 147,276.09/x - Step 3: Cross multiply
280,381.77x = 420,259.17 × 147,276.09 - Step 4: Simplify right side
280,381.77x = 61,894,127,344.25 - Step 5: Solve for x
x = 61,894,127,344.25/280,381.77 - Step 6: Final answer
x = 220,749.47
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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.