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Finding the Fourth Proportional to 259,306.36, 388,959.90 and 170,954.44

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Solution

The fourth proportional to 259,306.36, 388,959.90 and 170,954.44 is: 256,431.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,306.36 : 388,959.90 = 170,954.44 : x
  2. Step 2: Convert to fraction form
    259,306.36/388,959.90 = 170,954.44/x
  3. Step 3: Cross multiply
    259,306.36x = 388,959.90 × 170,954.44
  4. Step 4: Simplify right side
    259,306.36x = 66,494,421,886.96
  5. Step 5: Solve for x
    x = 66,494,421,886.96/259,306.36
  6. Step 6: Final answer
    x = 256,431.90

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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.