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Finding the Fourth Proportional to 235,812.59, 325,422.87 and 128,383.73

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Solution

The fourth proportional to 235,812.59, 325,422.87 and 128,383.73 is: 177,170.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,812.59 : 325,422.87 = 128,383.73 : x
  2. Step 2: Convert to fraction form
    235,812.59/325,422.87 = 128,383.73/x
  3. Step 3: Cross multiply
    235,812.59x = 325,422.87 × 128,383.73
  4. Step 4: Simplify right side
    235,812.59x = 41,779,002,820.19
  5. Step 5: Solve for x
    x = 41,779,002,820.19/235,812.59
  6. Step 6: Final answer
    x = 177,170.36

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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.