Home / 259,318.14-388,977.28-81,839.04

Finding the Fourth Proportional to 259,318.14, 388,977.28 and 81,839.04

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Solution

The fourth proportional to 259,318.14, 388,977.28 and 81,839.04 is: 122,758.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,318.14 : 388,977.28 = 81,839.04 : x
  2. Step 2: Convert to fraction form
    259,318.14/388,977.28 = 81,839.04/x
  3. Step 3: Cross multiply
    259,318.14x = 388,977.28 × 81,839.04
  4. Step 4: Simplify right side
    259,318.14x = 31,833,526,972.41
  5. Step 5: Solve for x
    x = 31,833,526,972.41/259,318.14
  6. Step 6: Final answer
    x = 122,758.58

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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.