Finding the Fourth Proportional to 511,981.79, 768,315.50 and 212,462.68
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Solution
The fourth proportional to 511,981.79, 768,315.50 and 212,462.68 is: 318,836.28
Step by Step Solution
- Step 1: Write the proportion equation
511,981.79 : 768,315.50 = 212,462.68 : x - Step 2: Convert to fraction form
511,981.79/768,315.50 = 212,462.68/x - Step 3: Cross multiply
511,981.79x = 768,315.50 × 212,462.68 - Step 4: Simplify right side
511,981.79x = 163,238,370,215.54 - Step 5: Solve for x
x = 163,238,370,215.54/511,981.79 - Step 6: Final answer
x = 318,836.28
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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.