Finding the Fourth Proportional to 430,688.14, 645,982.97 and 115,169.65
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Solution
The fourth proportional to 430,688.14, 645,982.97 and 115,169.65 is: 172,741.30
Step by Step Solution
- Step 1: Write the proportion equation
430,688.14 : 645,982.97 = 115,169.65 : x - Step 2: Convert to fraction form
430,688.14/645,982.97 = 115,169.65/x - Step 3: Cross multiply
430,688.14x = 645,982.97 × 115,169.65 - Step 4: Simplify right side
430,688.14x = 74,397,630,370.05 - Step 5: Solve for x
x = 74,397,630,370.05/430,688.14 - Step 6: Final answer
x = 172,741.30
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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.