Home / 279,820.20-419,730.30-92,831.70

Finding the Fourth Proportional to 279,820.20, 419,730.30 and 92,831.70

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Solution

The fourth proportional to 279,820.20, 419,730.30 and 92,831.70 is: 139,247.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,820.20 : 419,730.30 = 92,831.70 : x
  2. Step 2: Convert to fraction form
    279,820.20/419,730.30 = 92,831.70/x
  3. Step 3: Cross multiply
    279,820.20x = 419,730.30 × 92,831.70
  4. Step 4: Simplify right side
    279,820.20x = 38,964,277,290.51
  5. Step 5: Solve for x
    x = 38,964,277,290.51/279,820.20
  6. Step 6: Final answer
    x = 139,247.55

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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.