Finding the Fourth Proportional to 211,013,083.80, 316,519,625.70 and 130,391,515.80
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Solution
The fourth proportional to 211,013,083.80, 316,519,625.70 and 130,391,515.80 is: 195,587,273.70
Step by Step Solution
- Step 1: Write the proportion equation
211,013,083.80 : 316,519,625.70 = 130,391,515.80 : x - Step 2: Convert to fraction form
211,013,083.80/316,519,625.70 = 130,391,515.80/x - Step 3: Cross multiply
211,013,083.80x = 316,519,625.70 × 130,391,515.80 - Step 4: Simplify right side
211,013,083.80x = 41,271,473,775,471,632 - Step 5: Solve for x
x = 41,271,473,775,471,632/211,013,083.80 - Step 6: Final answer
x = 195,587,273.70
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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.