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Finding the Fourth Proportional to 263,963.80, 395,945.70 and 260,027.20

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Solution

The fourth proportional to 263,963.80, 395,945.70 and 260,027.20 is: 390,040.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,963.80 : 395,945.70 = 260,027.20 : x
  2. Step 2: Convert to fraction form
    263,963.80/395,945.70 = 260,027.20/x
  3. Step 3: Cross multiply
    263,963.80x = 395,945.70 × 260,027.20
  4. Step 4: Simplify right side
    263,963.80x = 102,956,651,723.04
  5. Step 5: Solve for x
    x = 102,956,651,723.04/263,963.80
  6. Step 6: Final answer
    x = 390,040.80

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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.