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Finding the Fourth Proportional to 235,448.56, 324,910.06 and 128,018.68

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Solution

The fourth proportional to 235,448.56, 324,910.06 and 128,018.68 is: 176,660.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,448.56 : 324,910.06 = 128,018.68 : x
  2. Step 2: Convert to fraction form
    235,448.56/324,910.06 = 128,018.68/x
  3. Step 3: Cross multiply
    235,448.56x = 324,910.06 × 128,018.68
  4. Step 4: Simplify right side
    235,448.56x = 41,594,555,867.60
  5. Step 5: Solve for x
    x = 41,594,555,867.60/235,448.56
  6. Step 6: Final answer
    x = 176,660.91

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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.