Finding the Fourth Proportional to 430,159.80, 645,239.70 and 220,207.80
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Solution
The fourth proportional to 430,159.80, 645,239.70 and 220,207.80 is: 330,311.70
Step by Step Solution
- Step 1: Write the proportion equation
430,159.80 : 645,239.70 = 220,207.80 : x - Step 2: Convert to fraction form
430,159.80/645,239.70 = 220,207.80/x - Step 3: Cross multiply
430,159.80x = 645,239.70 × 220,207.80 - Step 4: Simplify right side
430,159.80x = 142,086,814,809.66 - Step 5: Solve for x
x = 142,086,814,809.66/430,159.80 - Step 6: Final answer
x = 330,311.70
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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.