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Finding the Fourth Proportional to 263,397.40, 394,512.90 and 216,741.40

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Solution

The fourth proportional to 263,397.40, 394,512.90 and 216,741.40 is: 324,632.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,397.40 : 394,512.90 = 216,741.40 : x
  2. Step 2: Convert to fraction form
    263,397.40/394,512.90 = 216,741.40/x
  3. Step 3: Cross multiply
    263,397.40x = 394,512.90 × 216,741.40
  4. Step 4: Simplify right side
    263,397.40x = 85,507,278,264.06
  5. Step 5: Solve for x
    x = 85,507,278,264.06/263,397.40
  6. Step 6: Final answer
    x = 324,632.20

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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.