Finding the Fourth Proportional to 433,143.10, 649,807.35 and 129,561.07
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Solution
The fourth proportional to 433,143.10, 649,807.35 and 129,561.07 is: 194,369.33
Step by Step Solution
- Step 1: Write the proportion equation
433,143.10 : 649,807.35 = 129,561.07 : x - Step 2: Convert to fraction form
433,143.10/649,807.35 = 129,561.07/x - Step 3: Cross multiply
433,143.10x = 649,807.35 × 129,561.07 - Step 4: Simplify right side
433,143.10x = 84,189,735,559.86 - Step 5: Solve for x
x = 84,189,735,559.86/433,143.10 - Step 6: Final answer
x = 194,369.33
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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.