Finding the Fourth Proportional to 289,871.01, 399,819.60 and 280,116.99
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Solution
The fourth proportional to 289,871.01, 399,819.60 and 280,116.99 is: 386,365.86
Step by Step Solution
- Step 1: Write the proportion equation
289,871.01 : 399,819.60 = 280,116.99 : x - Step 2: Convert to fraction form
289,871.01/399,819.60 = 280,116.99/x - Step 3: Cross multiply
289,871.01x = 399,819.60 × 280,116.99 - Step 4: Simplify right side
289,871.01x = 111,996,262,895.00 - Step 5: Solve for x
x = 111,996,262,895.00/289,871.01 - Step 6: Final answer
x = 386,365.86
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.