Finding the Fourth Proportional to 209,316.74, 313,871.54 and 89,354.99
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Solution
The fourth proportional to 209,316.74, 313,871.54 and 89,354.99 is: 133,988.28
Step by Step Solution
- Step 1: Write the proportion equation
209,316.74 : 313,871.54 = 89,354.99 : x - Step 2: Convert to fraction form
209,316.74/313,871.54 = 89,354.99/x - Step 3: Cross multiply
209,316.74x = 313,871.54 × 89,354.99 - Step 4: Simplify right side
209,316.74x = 28,045,988,655.89 - Step 5: Solve for x
x = 28,045,988,655.89/209,316.74 - Step 6: Final answer
x = 133,988.28
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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.