Finding the Fourth Proportional to 210,331,575.90, 315,496,939.80 and 197,532,264.09
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Solution
The fourth proportional to 210,331,575.90, 315,496,939.80 and 197,532,264.09 is: 296,297,997.89
Step by Step Solution
- Step 1: Write the proportion equation
210,331,575.90 : 315,496,939.80 = 197,532,264.09 : x - Step 2: Convert to fraction form
210,331,575.90/315,496,939.80 = 197,532,264.09/x - Step 3: Cross multiply
210,331,575.90x = 315,496,939.80 × 197,532,264.09 - Step 4: Simplify right side
210,331,575.90x = 62,320,824,832,160,432 - Step 5: Solve for x
x = 62,320,824,832,160,432/210,331,575.90 - Step 6: Final answer
x = 296,297,997.89
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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.