Finding the Fourth Proportional to 268,272,013.80, 402,408,020.70 and 266,571,402.60
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Solution
The fourth proportional to 268,272,013.80, 402,408,020.70 and 266,571,402.60 is: 399,857,103.90
Step by Step Solution
- Step 1: Write the proportion equation
268,272,013.80 : 402,408,020.70 = 266,571,402.60 : x - Step 2: Convert to fraction form
268,272,013.80/402,408,020.70 = 266,571,402.60/x - Step 3: Cross multiply
268,272,013.80x = 402,408,020.70 × 266,571,402.60 - Step 4: Simplify right side
268,272,013.80x = 107,270,470,495,488,832 - Step 5: Solve for x
x = 107,270,470,495,488,832/268,272,013.80 - Step 6: Final answer
x = 399,857,103.90
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1.5x scale
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.