Finding the Fourth Proportional to 328,861.90, 493,101.42 and 128,947.96
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Solution
The fourth proportional to 328,861.90, 493,101.42 and 128,947.96 is: 193,346.88
Step by Step Solution
- Step 1: Write the proportion equation
328,861.90 : 493,101.42 = 128,947.96 : x - Step 2: Convert to fraction form
328,861.90/493,101.42 = 128,947.96/x - Step 3: Cross multiply
328,861.90x = 493,101.42 × 128,947.96 - Step 4: Simplify right side
328,861.90x = 63,584,422,182.10 - Step 5: Solve for x
x = 63,584,422,182.10/328,861.90 - Step 6: Final answer
x = 193,346.88
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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.