Finding the Fourth Proportional to 430,122.99, 645,142.79 and 130,606.20
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Solution
The fourth proportional to 430,122.99, 645,142.79 and 130,606.20 is: 195,896.64
Step by Step Solution
- Step 1: Write the proportion equation
430,122.99 : 645,142.79 = 130,606.20 : x - Step 2: Convert to fraction form
430,122.99/645,142.79 = 130,606.20/x - Step 3: Cross multiply
430,122.99x = 645,142.79 × 130,606.20 - Step 4: Simplify right side
430,122.99x = 84,259,648,259.30 - Step 5: Solve for x
x = 84,259,648,259.30/430,122.99 - Step 6: Final answer
x = 195,896.64
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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.