Home / 258,723.50-388,149.83-90,246.24

Finding the Fourth Proportional to 258,723.50, 388,149.83 and 90,246.24

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Solution

The fourth proportional to 258,723.50, 388,149.83 and 90,246.24 is: 135,391.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,723.50 : 388,149.83 = 90,246.24 : x
  2. Step 2: Convert to fraction form
    258,723.50/388,149.83 = 90,246.24/x
  3. Step 3: Cross multiply
    258,723.50x = 388,149.83 × 90,246.24
  4. Step 4: Simplify right side
    258,723.50x = 35,029,062,262.91
  5. Step 5: Solve for x
    x = 35,029,062,262.91/258,723.50
  6. Step 6: Final answer
    x = 135,391.89

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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.