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Finding the Fourth Proportional to 269,431.80, 404,115.30 and 111,643.80

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Solution

The fourth proportional to 269,431.80, 404,115.30 and 111,643.80 is: 167,452.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,431.80 : 404,115.30 = 111,643.80 : x
  2. Step 2: Convert to fraction form
    269,431.80/404,115.30 = 111,643.80/x
  3. Step 3: Cross multiply
    269,431.80x = 404,115.30 × 111,643.80
  4. Step 4: Simplify right side
    269,431.80x = 45,116,967,730.14
  5. Step 5: Solve for x
    x = 45,116,967,730.14/269,431.80
  6. Step 6: Final answer
    x = 167,452.27

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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.