Finding the Fourth Proportional to 280,901.18, 421,393.79 and 103,394.68
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Solution
The fourth proportional to 280,901.18, 421,393.79 and 103,394.68 is: 155,107.48
Step by Step Solution
- Step 1: Write the proportion equation
280,901.18 : 421,393.79 = 103,394.68 : x - Step 2: Convert to fraction form
280,901.18/421,393.79 = 103,394.68/x - Step 3: Cross multiply
280,901.18x = 421,393.79 × 103,394.68 - Step 4: Simplify right side
280,901.18x = 43,569,875,276.04 - Step 5: Solve for x
x = 43,569,875,276.04/280,901.18 - Step 6: Final answer
x = 155,107.48
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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.