Finding the Fourth Proportional to 212,598,469.74, 318,828,769.53 and 81,433,765.74
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Solution
The fourth proportional to 212,598,469.74, 318,828,769.53 and 81,433,765.74 is: 122,124,243.70
Step by Step Solution
- Step 1: Write the proportion equation
212,598,469.74 : 318,828,769.53 = 81,433,765.74 : x - Step 2: Convert to fraction form
212,598,469.74/318,828,769.53 = 81,433,765.74/x - Step 3: Cross multiply
212,598,469.74x = 318,828,769.53 × 81,433,765.74 - Step 4: Simplify right side
212,598,469.74x = 25,963,427,327,484,324 - Step 5: Solve for x
x = 25,963,427,327,484,324/212,598,469.74 - Step 6: Final answer
x = 122,124,243.70
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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.