Finding the Fourth Proportional to 433,139.09, 649,801.35 and 129,557.07
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Solution
The fourth proportional to 433,139.09, 649,801.35 and 129,557.07 is: 194,363.34
Step by Step Solution
- Step 1: Write the proportion equation
433,139.09 : 649,801.35 = 129,557.07 : x - Step 2: Convert to fraction form
433,139.09/649,801.35 = 129,557.07/x - Step 3: Cross multiply
433,139.09x = 649,801.35 × 129,557.07 - Step 4: Simplify right side
433,139.09x = 84,186,358,988.04 - Step 5: Solve for x
x = 84,186,358,988.04/433,139.09 - Step 6: Final answer
x = 194,363.34
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1.5x scale
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.