Finding the Fourth Proportional to 285,087,755.19, 393,421,105.26 and 154,707,563.19
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Solution
The fourth proportional to 285,087,755.19, 393,421,105.26 and 154,707,563.19 is: 213,496,438.88
Step by Step Solution
- Step 1: Write the proportion equation
285,087,755.19 : 393,421,105.26 = 154,707,563.19 : x - Step 2: Convert to fraction form
285,087,755.19/393,421,105.26 = 154,707,563.19/x - Step 3: Cross multiply
285,087,755.19x = 393,421,105.26 × 154,707,563.19 - Step 4: Simplify right side
285,087,755.19x = 60,865,220,502,291,088 - Step 5: Solve for x
x = 60,865,220,502,291,088/285,087,755.19 - Step 6: Final answer
x = 213,496,438.88
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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.