Home / 258,723.03-388,086.26-90,242.73

Finding the Fourth Proportional to 258,723.03, 388,086.26 and 90,242.73

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Solution

The fourth proportional to 258,723.03, 388,086.26 and 90,242.73 is: 135,364.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,723.03 : 388,086.26 = 90,242.73 : x
  2. Step 2: Convert to fraction form
    258,723.03/388,086.26 = 90,242.73/x
  3. Step 3: Cross multiply
    258,723.03x = 388,086.26 × 90,242.73
  4. Step 4: Simplify right side
    258,723.03x = 35,021,963,126.68
  5. Step 5: Solve for x
    x = 35,021,963,126.68/258,723.03
  6. Step 6: Final answer
    x = 135,364.69

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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.