Home / 318,489.20-477,733.83-81,831.87

Finding the Fourth Proportional to 318,489.20, 477,733.83 and 81,831.87

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Solution

The fourth proportional to 318,489.20, 477,733.83 and 81,831.87 is: 122,747.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,489.20 : 477,733.83 = 81,831.87 : x
  2. Step 2: Convert to fraction form
    318,489.20/477,733.83 = 81,831.87/x
  3. Step 3: Cross multiply
    318,489.20x = 477,733.83 × 81,831.87
  4. Step 4: Simplify right side
    318,489.20x = 39,093,852,671.16
  5. Step 5: Solve for x
    x = 39,093,852,671.16/318,489.20
  6. Step 6: Final answer
    x = 122,747.81

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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.