Finding the Fourth Proportional to 209,579.52, 288,579.27 and 157,971.63
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Solution
The fourth proportional to 209,579.52, 288,579.27 and 157,971.63 is: 217,518.09
Step by Step Solution
- Step 1: Write the proportion equation
209,579.52 : 288,579.27 = 157,971.63 : x - Step 2: Convert to fraction form
209,579.52/288,579.27 = 157,971.63/x - Step 3: Cross multiply
209,579.52x = 288,579.27 × 157,971.63 - Step 4: Simplify right side
209,579.52x = 45,587,337,666.11 - Step 5: Solve for x
x = 45,587,337,666.11/209,579.52 - Step 6: Final answer
x = 217,518.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.