Home / 306,212.45-422,436.80-178,831.85

Finding the Fourth Proportional to 306,212.45, 422,436.80 and 178,831.85

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Solution

The fourth proportional to 306,212.45, 422,436.80 and 178,831.85 is: 246,708.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,212.45 : 422,436.80 = 178,831.85 : x
  2. Step 2: Convert to fraction form
    306,212.45/422,436.80 = 178,831.85/x
  3. Step 3: Cross multiply
    306,212.45x = 422,436.80 × 178,831.85
  4. Step 4: Simplify right side
    306,212.45x = 75,545,152,786.98
  5. Step 5: Solve for x
    x = 75,545,152,786.98/306,212.45
  6. Step 6: Final answer
    x = 246,708.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.