Finding the Fourth Proportional to 430,599.70, 645,640.35 and 220,647.70
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Solution
The fourth proportional to 430,599.70, 645,640.35 and 220,647.70 is: 330,838.73
Step by Step Solution
- Step 1: Write the proportion equation
430,599.70 : 645,640.35 = 220,647.70 : x - Step 2: Convert to fraction form
430,599.70/645,640.35 = 220,647.70/x - Step 3: Cross multiply
430,599.70x = 645,640.35 × 220,647.70 - Step 4: Simplify right side
430,599.70x = 142,459,058,254.70 - Step 5: Solve for x
x = 142,459,058,254.70/430,599.70 - Step 6: Final answer
x = 330,838.73
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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.