Home / 259,318.40-388,459.20-148,380.80

Finding the Fourth Proportional to 259,318.40, 388,459.20 and 148,380.80

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Solution

The fourth proportional to 259,318.40, 388,459.20 and 148,380.80 is: 222,274.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,318.40 : 388,459.20 = 148,380.80 : x
  2. Step 2: Convert to fraction form
    259,318.40/388,459.20 = 148,380.80/x
  3. Step 3: Cross multiply
    259,318.40x = 388,459.20 × 148,380.80
  4. Step 4: Simplify right side
    259,318.40x = 57,639,886,863.36
  5. Step 5: Solve for x
    x = 57,639,886,863.36/259,318.40
  6. Step 6: Final answer
    x = 222,274.57

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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.