Finding the Fourth Proportional to 280,374.30, 386,911.56 and 159,512.99
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Solution
The fourth proportional to 280,374.30, 386,911.56 and 159,512.99 is: 220,125.09
Step by Step Solution
- Step 1: Write the proportion equation
280,374.30 : 386,911.56 = 159,512.99 : x - Step 2: Convert to fraction form
280,374.30/386,911.56 = 159,512.99/x - Step 3: Cross multiply
280,374.30x = 386,911.56 × 159,512.99 - Step 4: Simplify right side
280,374.30x = 61,717,417,866.61 - Step 5: Solve for x
x = 61,717,417,866.61/280,374.30 - Step 6: Final answer
x = 220,125.09
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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.