Finding the Fourth Proportional to 318,239,489,257.28, 439,180,889,559.84 and 173,731,324,377.92
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Solution
The fourth proportional to 318,239,489,257.28, 439,180,889,559.84 and 173,731,324,377.92 is: 239,754,902,079.48
Step by Step Solution
- Step 1: Write the proportion equation
318,239,489,257.28 : 439,180,889,559.84 = 173,731,324,377.92 : x - Step 2: Convert to fraction form
318,239,489,257.28/439,180,889,559.84 = 173,731,324,377.92/x - Step 3: Cross multiply
318,239,489,257.28x = 439,180,889,559.84 × 173,731,324,377.92 - Step 4: Simplify right side
318,239,489,257.28x = 76,299,477,584,704,027,230,208 - Step 5: Solve for x
x = 76,299,477,584,704,027,230,208/318,239,489,257.28 - Step 6: Final answer
x = 239,754,902,079.48
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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.