Home / 279,860.03-419,831.55-90,258.06

Finding the Fourth Proportional to 279,860.03, 419,831.55 and 90,258.06

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Solution

The fourth proportional to 279,860.03, 419,831.55 and 90,258.06 is: 135,400.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,860.03 : 419,831.55 = 90,258.06 : x
  2. Step 2: Convert to fraction form
    279,860.03/419,831.55 = 90,258.06/x
  3. Step 3: Cross multiply
    279,860.03x = 419,831.55 × 90,258.06
  4. Step 4: Simplify right side
    279,860.03x = 37,893,181,229.79
  5. Step 5: Solve for x
    x = 37,893,181,229.79/279,860.03
  6. Step 6: Final answer
    x = 135,400.48

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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.