Home / 258,317.28-386,754.12-139,563.12

Finding the Fourth Proportional to 258,317.28, 386,754.12 and 139,563.12

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Solution

The fourth proportional to 258,317.28, 386,754.12 and 139,563.12 is: 208,954.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,317.28 : 386,754.12 = 139,563.12 : x
  2. Step 2: Convert to fraction form
    258,317.28/386,754.12 = 139,563.12/x
  3. Step 3: Cross multiply
    258,317.28x = 386,754.12 × 139,563.12
  4. Step 4: Simplify right side
    258,317.28x = 53,976,611,660.05
  5. Step 5: Solve for x
    x = 53,976,611,660.05/258,317.28
  6. Step 6: Final answer
    x = 208,954.71

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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.