Finding the Fourth Proportional to 280,486.20, 387,073.06 and 159,636.68
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Solution
The fourth proportional to 280,486.20, 387,073.06 and 159,636.68 is: 220,299.82
Step by Step Solution
- Step 1: Write the proportion equation
280,486.20 : 387,073.06 = 159,636.68 : x - Step 2: Convert to fraction form
280,486.20/387,073.06 = 159,636.68/x - Step 3: Cross multiply
280,486.20x = 387,073.06 × 159,636.68 - Step 4: Simplify right side
280,486.20x = 61,791,058,215.84 - Step 5: Solve for x
x = 61,791,058,215.84/280,486.20 - Step 6: Final answer
x = 220,299.82
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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.