Finding the Fourth Proportional to 430,069.80, 645,104.70 and 220,117.80
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Solution
The fourth proportional to 430,069.80, 645,104.70 and 220,117.80 is: 330,176.70
Step by Step Solution
- Step 1: Write the proportion equation
430,069.80 : 645,104.70 = 220,117.80 : x - Step 2: Convert to fraction form
430,069.80/645,104.70 = 220,117.80/x - Step 3: Cross multiply
430,069.80x = 645,104.70 × 220,117.80 - Step 4: Simplify right side
430,069.80x = 141,999,027,333.66 - Step 5: Solve for x
x = 141,999,027,333.66/430,069.80 - Step 6: Final answer
x = 330,176.70
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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.