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Finding the Fourth Proportional to 236,076.20, 325,785.16 and 128,646.20

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Solution

The fourth proportional to 236,076.20, 325,785.16 and 128,646.20 is: 177,531.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,076.20 : 325,785.16 = 128,646.20 : x
  2. Step 2: Convert to fraction form
    236,076.20/325,785.16 = 128,646.20/x
  3. Step 3: Cross multiply
    236,076.20x = 325,785.16 × 128,646.20
  4. Step 4: Simplify right side
    236,076.20x = 41,911,022,850.39
  5. Step 5: Solve for x
    x = 41,911,022,850.39/236,076.20
  6. Step 6: Final answer
    x = 177,531.76

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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.