Finding the Fourth Proportional to 328,630.10, 493,139.55 and 239,659.70
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Solution
The fourth proportional to 328,630.10, 493,139.55 and 239,659.70 is: 359,631.32
Step by Step Solution
- Step 1: Write the proportion equation
328,630.10 : 493,139.55 = 239,659.70 : x - Step 2: Convert to fraction form
328,630.10/493,139.55 = 239,659.70/x - Step 3: Cross multiply
328,630.10x = 493,139.55 × 239,659.70 - Step 4: Simplify right side
328,630.10x = 118,185,676,611.14 - Step 5: Solve for x
x = 118,185,676,611.14/328,630.10 - Step 6: Final answer
x = 359,631.32
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1.5x scale
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.