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Finding the Fourth Proportional to 259,344.24, 388,314.90 and 134,422.80

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Solution

The fourth proportional to 259,344.24, 388,314.90 and 134,422.80 is: 201,270.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,344.24 : 388,314.90 = 134,422.80 : x
  2. Step 2: Convert to fraction form
    259,344.24/388,314.90 = 134,422.80/x
  3. Step 3: Cross multiply
    259,344.24x = 388,314.90 × 134,422.80
  4. Step 4: Simplify right side
    259,344.24x = 52,198,376,139.72
  5. Step 5: Solve for x
    x = 52,198,376,139.72/259,344.24
  6. Step 6: Final answer
    x = 201,270.62

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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.