Finding the Fourth Proportional to 317,659,396.40, 438,380,612.56 and 176,536,564.84
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Solution
The fourth proportional to 317,659,396.40, 438,380,612.56 and 176,536,564.84 is: 243,626,375.64
Step by Step Solution
- Step 1: Write the proportion equation
317,659,396.40 : 438,380,612.56 = 176,536,564.84 : x - Step 2: Convert to fraction form
317,659,396.40/438,380,612.56 = 176,536,564.84/x - Step 3: Cross multiply
317,659,396.40x = 438,380,612.56 × 176,536,564.84 - Step 4: Simplify right side
317,659,396.40x = 77,390,207,433,797,360 - Step 5: Solve for x
x = 77,390,207,433,797,360/317,659,396.40 - Step 6: Final answer
x = 243,626,375.64
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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.