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Finding the Fourth Proportional to 269,455.20, 403,745.40 and 169,436.40

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Solution

The fourth proportional to 269,455.20, 403,745.40 and 169,436.40 is: 253,879.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,455.20 : 403,745.40 = 169,436.40 : x
  2. Step 2: Convert to fraction form
    269,455.20/403,745.40 = 169,436.40/x
  3. Step 3: Cross multiply
    269,455.20x = 403,745.40 × 169,436.40
  4. Step 4: Simplify right side
    269,455.20x = 68,409,167,092.56
  5. Step 5: Solve for x
    x = 68,409,167,092.56/269,455.20
  6. Step 6: Final answer
    x = 253,879.56

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1.5x scale

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.