Finding the Fourth Proportional to 339,310,638.40, 509,115,256.80 and 157,464,212.80
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Solution
The fourth proportional to 339,310,638.40, 509,115,256.80 and 157,464,212.80 is: 236,265,604.62
Step by Step Solution
- Step 1: Write the proportion equation
339,310,638.40 : 509,115,256.80 = 157,464,212.80 : x - Step 2: Convert to fraction form
339,310,638.40/509,115,256.80 = 157,464,212.80/x - Step 3: Cross multiply
339,310,638.40x = 509,115,256.80 × 157,464,212.80 - Step 4: Simplify right side
339,310,638.40x = 80,167,433,136,481,856 - Step 5: Solve for x
x = 80,167,433,136,481,856/339,310,638.40 - Step 6: Final answer
x = 236,265,604.62
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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.