Finding the Fourth Proportional to 430,140.76, 645,212.16 and 130,623.59
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Solution
The fourth proportional to 430,140.76, 645,212.16 and 130,623.59 is: 195,935.70
Step by Step Solution
- Step 1: Write the proportion equation
430,140.76 : 645,212.16 = 130,623.59 : x - Step 2: Convert to fraction form
430,140.76/645,212.16 = 130,623.59/x - Step 3: Cross multiply
430,140.76x = 645,212.16 × 130,623.59 - Step 4: Simplify right side
430,140.76x = 84,279,928,650.85 - Step 5: Solve for x
x = 84,279,928,650.85/430,140.76 - Step 6: Final answer
x = 195,935.70
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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.