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Finding the Fourth Proportional to 269,366.40, 403,992.90 and 136,121.40

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Solution

The fourth proportional to 269,366.40, 403,992.90 and 136,121.40 is: 204,153.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,366.40 : 403,992.90 = 136,121.40 : x
  2. Step 2: Convert to fraction form
    269,366.40/403,992.90 = 136,121.40/x
  3. Step 3: Cross multiply
    269,366.40x = 403,992.90 × 136,121.40
  4. Step 4: Simplify right side
    269,366.40x = 54,992,079,138.06
  5. Step 5: Solve for x
    x = 54,992,079,138.06/269,366.40
  6. Step 6: Final answer
    x = 204,153.45

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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.