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Finding the Fourth Proportional to 269,087.40, 403,631.10 and 263,255.40

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Solution

The fourth proportional to 269,087.40, 403,631.10 and 263,255.40 is: 394,883.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,087.40 : 403,631.10 = 263,255.40 : x
  2. Step 2: Convert to fraction form
    269,087.40/403,631.10 = 263,255.40/x
  3. Step 3: Cross multiply
    269,087.40x = 403,631.10 × 263,255.40
  4. Step 4: Simplify right side
    269,087.40x = 106,258,066,682.94
  5. Step 5: Solve for x
    x = 106,258,066,682.94/269,087.40
  6. Step 6: Final answer
    x = 394,883.10

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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.