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Finding the Fourth Proportional to 269,667.40, 404,646.90 and 111,911.80

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Solution

The fourth proportional to 269,667.40, 404,646.90 and 111,911.80 is: 167,928.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,667.40 : 404,646.90 = 111,911.80 : x
  2. Step 2: Convert to fraction form
    269,667.40/404,646.90 = 111,911.80/x
  3. Step 3: Cross multiply
    269,667.40x = 404,646.90 × 111,911.80
  4. Step 4: Simplify right side
    269,667.40x = 45,284,762,943.42
  5. Step 5: Solve for x
    x = 45,284,762,943.42/269,667.40
  6. Step 6: Final answer
    x = 167,928.21

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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.