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Finding the Fourth Proportional to 235,630.46, 325,171.46 and 128,201.28

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Solution

The fourth proportional to 235,630.46, 325,171.46 and 128,201.28 is: 176,918.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,630.46 : 325,171.46 = 128,201.28 : x
  2. Step 2: Convert to fraction form
    235,630.46/325,171.46 = 128,201.28/x
  3. Step 3: Cross multiply
    235,630.46x = 325,171.46 × 128,201.28
  4. Step 4: Simplify right side
    235,630.46x = 41,687,396,492.58
  5. Step 5: Solve for x
    x = 41,687,396,492.58/235,630.46
  6. Step 6: Final answer
    x = 176,918.54

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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.